Airworthiness Directives; GROB-WERKE Model G120A Airplanes, 14599-14601 [05-5707]

Download as PDF Federal Register / Vol. 70, No. 55 / Wednesday, March 23, 2005 / Proposed Rules Accomplishment Instructions of Airbus Service Bulletin A320–33–1041, dated December 11, 2003. Alternative Methods of Compliance (AMOCs) (g) The Manager, International Branch, ANM–116, Transport Airplane Directorate, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. Related Information (h) French airworthiness directive F–2004– 121 R1, dated October 13, 2004, also addresses the subject of this AD. Issued in Renton, Washington, on March 9, 2005. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 05–5699 Filed 3–22–05; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. 2002–NM–306–AD] RIN 2120–AA64 Airworthiness Directives; McDonnell Douglas Model DC–9–10, DC–9–20, DC–9–30, DC–9–40, and DC–9–50 Series Airplanes; and Model DC–9–81 (MD–81) and DC–9–82 (MD–82) Airplanes Federal Aviation Administration, DOT. ACTION: Proposed rule; withdrawal. AGENCY: This action withdraws a notice of proposed rulemaking (NPRM) that proposed superseding an existing airworthiness directive (AD), applicable to certain McDonnell Douglas transport category airplanes. That action would have required inspection for proper installation, damage, or abrasion of the power feeder cables and trough installations; proper installation of caterpillar grommets in the lightening holes; and repair if necessary. The proposed rule also would have required modification of the power feeder cable installation and added airplanes to the applicability of the existing AD. Since the issuance of the NPRM, the FAA has received new data indicating that the applicability and required actions of the existing AD adequately address the unsafe condition that is identified in the existing AD. Accordingly, the proposed AD is withdrawn. FOR FURTHER INFORMATION CONTACT: Elvin Wheeler, Aerospace Engineer, Systems and Equipment Branch, ANM– SUMMARY: VerDate jul<14>2003 16:19 Mar 22, 2005 Jkt 205001 130L, FAA, Los Angeles Aircraft Certification Office, 3960 Paramount Boulevard, Lakewood, California 90712–4137; telephone (562) 627–5344; fax (562) 627–5210. A proposal to amend part 39 of the Federal Aviation Regulations (14 CFR part 39) to supersede an existing airworthiness directive (AD), applicable to certain McDonnell Douglas transport category airplanes, was published in the Federal Register as a Notice of Proposed Rulemaking (NPRM) on September 19, 2003 (68 FR 54864). The proposed rule would have required inspection for proper installation, damage, or abrasion of the power feeder cables and trough installations; proper installation of caterpillar grommets in the lightening holes; and repair if necessary. The proposed rule also would have required modification of the power feeder cable installation and added airplanes to the applicability of existing AD 85–25–06, amendment 39–5177 (50 FR 49833, December 5, 1985). That action was prompted by reports of chafing and/or abrasion of the power feeder cables and six instances of shorted power feeder cables. The proposed actions were intended to prevent a possible loss of electrical bus power, which could result in a potential fire ignition source and consequent fire in the cabin. SUPPLEMENTARY INFORMATION: Actions That Occurred Since the NPRM Was Issued Since the issuance of that NPRM, we have had clarification from the manufacturer that no additional airplanes have been identified that may be affected by the unsafe condition described above, other than those specified in McDonnell Douglas DC–9 Service Bulletin 24–78, dated April 9, 1985. That service bulletin was specified in AD 85–25–06 as the appropriate source of service information for that AD. FAA’s Conclusions Upon further consideration, the FAA has determined that, since DC–9 Service Bulletin 27–78, dated April 9, 1985, is the service information cited in AD 85– 25–06 and no additional airplanes have been identified that may be affected by the unsafe condition, it is unnecessary to supersede that AD. Accordingly, the proposed rule is hereby withdrawn. Withdrawal of this NPRM constitutes only such action, and does not preclude the agency from issuing another action in the future, nor does it commit the agency to any course of action in the future. PO 00000 Frm 00022 Fmt 4702 Sfmt 4702 14599 Regulatory Impact Since this action only withdraws a notice of proposed rulemaking, it is neither a proposed nor a final rule and therefore is not covered under Executive Order 12866, the Regulatory Flexibility Act, or DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979). List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Safety. The Withdrawal Accordingly, the notice of proposed rulemaking, Docket 2002–NM–306–AD, published in the Federal Register on September 19, 2003 (68 FR 54864), is withdrawn. Issued in Renton, Washington, on March 14, 2005. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 05–5700 Filed 3–22–05; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2004–19473; Directorate Identifier 2004–CE–35–AD] RIN 2120–AA64 Airworthiness Directives; GROB– WERKE Model G120A Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). AGENCY: SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) for certain GROB–WERKE Model G120A airplanes. This proposed AD would require you to replace the main landing gear (MLG) up-lock hook assembly. This proposed AD results from mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Germany. We are issuing this proposed AD to prevent the MLG from becoming jammed and not extending, which could result in loss of control of the airplane during landing. DATES: We must receive any comments on this proposed AD by May 10, 2005. ADDRESSES: Use one of the following to submit comments on this proposed AD: • DOT Docket Web site: Go to https://dms.dot.gov and follow the instructions for sending your comments electronically. E:\FR\FM\23MRP1.SGM 23MRP1 14600 Federal Register / Vol. 70, No. 55 / Wednesday, March 23, 2005 / Proposed Rules • Government-wide rulemaking Web site: Go to https://www.regulations.gov and follow the instructions for sending your comments electronically. • Mail: Docket Management Facility; U.S. Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL–401, Washington, DC 20590– 0001. • Fax: 1–202–493–2251. • Hand Delivery: Room PL–401 on the plaza level of the Nassif Building, 400 Seventh Street, SW., Washington, DC between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. To get the service information identified in this proposed AD, contact GROB–WERKE, Burkart Grob e.K., Unternehmenbereich Luft-und Raumfahrt, Lettenbachstrasse 9, 86874 Tussenhausen-Mattsies, Germany; telephone: 011 49 8268 998 105; facsimile: 011 49 8268 998 200. To view the comments to this proposed AD, go to https://dms.dot.gov. This is docket number FAA–2004– 19473. Karl Schletzbaum, Aerospace Engineer, ACE–112, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: 816–329– 4146; facsimile: 816–329–4090. SUPPLEMENTARY INFORMATION: FOR FURTHER INFORMATION CONTACT: Comments Invited How do I comment on this proposed AD? We invite you to submit any written relevant data, views, or arguments regarding this proposal. Send your comments to an address listed under ADDRESSES. Include the docket number, ‘‘FAA–2004–19473; Directorate Identifier 2004–CE–35–AD’’ at the beginning of your comments. We will post all comments we receive, without change, to https://dms.dot.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact with FAA personnel concerning this proposed rulemaking. Using the search function of our docket Web site, anyone can find and read the comments received into any of our dockets, including the name of the individual who sent the comment (or signed the comment on behalf of an association, business, labor union, etc.). This is docket number FAA–2004–19473. You may review the DOT’s complete Privacy Act Statement in the Federal Register published on April 11, 2000 (65 FR 19477–78) or you may visit https:// dms.dot.gov. Are there any specific portions of this proposed AD I should pay attention to? We specifically invite comments on the VerDate jul<14>2003 16:19 Mar 22, 2005 Jkt 205001 overall regulatory, economic, environmental, and energy aspects of this proposed AD. If you contact us through a nonwritten communication and that contact relates to a substantive part of this proposed AD, we will summarize the contact and place the summary in the docket. We will consider all comments received by the closing date and may amend this proposed AD in light of those comments and contacts. Docket Information Where can I go to view the docket information? You may view the AD docket that contains the proposal, any comments received, and any final disposition in person at the DMS Docket Offices between 9 a.m. and 5 p.m. (eastern standard time), Monday through Friday, except Federal holidays. The Docket Office (telephone 1–800– 647–5227) is located on the plaza level of the Department of Transportation NASSIF Building at the street address stated in ADDRESSES. You may also view the AD docket on the Internet at http:/ /dms.dot.gov. The comments will be available in the AD docket shortly after the DMS receives them. Discussion What events have caused this proposed AD? The Luftfahrt-Bundesamt (LBA), which is the airworthiness authority for Germany, recently notified FAA that an unsafe condition may exist on certain GROB–WERKE Model G120A airplanes. The LBA reports that the uplock/main landing gear roller combination may become jammed because of contamination (i.e., dirt or dust) or minor misalignments of the assembly. What is the potential impact if FAA took no action? This condition, if not corrected, could cause the MLG to become jammed and to not extend, which could result in loss of control of the airplane during landing. Is there service information that applies to this subject? GROB–WERKE has issued Service Bulletin No. MSB1121–052/2, dated February 14, 2005. What are the provisions of this service information? The service bulletin includes procedures for: —Removing the MLG up-lock hook assembly; and —Installing the new MLG up-lock hook assembly. What action did the LBA take? The LBA classified this service bulletin as mandatory and issued German AD Number D–2004–299R1, dated November 9, 2004, to ensure the PO 00000 Frm 00023 Fmt 4702 Sfmt 4702 continued airworthiness of these airplanes in Germany. Did the LBA inform the United States under the bilateral airworthiness agreement? These GROB–WERKE Model G120A airplanes are manufactured in Germany and are typecertificated for operation in the United States under the provisions of section 21.29 of the Federal Aviation Regulations (14 CFR 21.29) and the applicable bilateral airworthiness agreement. Under this bilateral airworthiness agreement, the LBA has kept us informed of the situation described above. FAA’s Determination and Requirements of This Proposed AD What has FAA decided? We have examined the LBA’s findings, reviewed all available information, and determined that AD action is necessary for products of this type design that are certificated for operation in the United States. Since the unsafe condition described previously is likely to exist or develop on other GROB–WERKE Model G120A airplanes of the same type design that are registered in the United States, we are proposing AD action to prevent the MLG from becoming jammed and not extending, which could result in loss of control of the airplane during landing. What would this proposed AD require? This proposed AD would require you to incorporate the actions in the previously-referenced service bulletin. How does the revision to 14 CFR part 39 affect this proposed AD? On July 10, 2002, we published a new version of 14 CFR part 39 (67 FR 47997, July 22, 2002), which governs FAA’s AD system. This regulation now includes material that relates to altered products, special flight permits, and alternative methods of compliance. This material previously was included in each individual AD. Since this material is included in 14 CFR part 39, we will not include it in future AD actions. Costs of Compliance How many airplanes would this proposed AD impact? We estimate that this proposed AD affects 6 airplanes in the U.S. registry. What would be the cost impact of this proposed AD on owners/operators of the affected airplanes? GROB–WERKE will provide warranty credit for labor and parts. Regulatory Findings Would this proposed AD impact various entities? We have determined E:\FR\FM\23MRP1.SGM 23MRP1 Federal Register / Vol. 70, No. 55 / Wednesday, March 23, 2005 / Proposed Rules that this proposed AD would not have federalism implications under Executive Order 13132. This proposed AD would not have a substantial direct effect on the States, on the relationship between the national Government and the States, or on the distribution of power and responsibilities among the various levels of government. Would this proposed AD involve a significant rule or regulatory action? For the reasons discussed above, I certify that this proposed AD: 1. Is not a ‘‘significant regulatory action’’ under Executive Order 12866; 2. Is not a ‘‘significant rule’’ under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3. Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. We prepared a summary of the costs to comply with this proposed AD and placed it in the AD Docket. You may get a copy of this summary by sending a request to us at the address listed under ADDRESSES. Include ‘‘AD Docket FAA– 2004–19473; Directorate Identifier 2004–CE–35–AD’’ in your request. This proposed rulemaking is promulgated under the authority in Subtitle VII, Part A, Subpart III, Section 44701, General requirements. Under that section, the FAA is charged with prescribing minimum standards required in the interest of safety for the design of aircraft. This proposed regulation is within the scope of that authority since it corrects an unsafe condition in the design of the aircraft caused by the MLG from becoming jammed and not extending. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Safety. The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the Federal Aviation Administration proposes to amend 14 CFR part 39 as follows: PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by adding the following new airworthiness directive (AD): 14601 GROB–WERKE: Docket No. FAA–2004– 19473; Directorate Identifier 2004–CE– 35–AD When Is the Last Date I Can Submit Comments on This Proposed AD? (a) We must receive comments on this proposed airworthiness directive (AD) by May 10, 2005. What Other ADs Are Affected by This Action? (b) None. What Airplanes Are Affected by This AD? (c) This AD affects the following airplane models and serial numbers that are certificated in any category: Model G120A, as of serial number 85001. What Is the Unsafe Condition Presented in This AD? (d) This AD is the result of a report that the main landing gear (MLG) may not extend because of contamination or misalignment of the assembly. The actions specified in this AD are intended to prevent the MLG from becoming jammed and not extending, which could result in loss of control of the airplane during landing. What Must I Do To Address This Problem? (e) To address this problem, you must do the following: Actions Compliance Procedures (1) Remove MGL lock-up hook assembly and replace with the new MLG lock-up hook assembly. Within 100 hours time-in-service after the effective date of this AD, unless GROB– WERKE Service Bulletin No. MSB1121– 052, dated September 15, 2004, is already incorporated. Prior to further flight after the installation of the new MLG lock-up hook assembly. Follow GROB–WERKE Service Bulletin No. MSB1121–052/2, dated February 14, 2005. (2) Inspect the MLG for proper operation and adjust as needed. May I Request an Alternative Method of Compliance? (f) You may request a different method of compliance or a different compliance time for this AD by following the procedures in 14 CFR 39.19. Unless FAA authorizes otherwise, send your request to your principal inspector. The principal inspector may add comments and will send your request to the Manager, Standards Office, Small Airplane Directorate, FAA. For information on any already approved alternative methods of compliance, contact Karl Schletzbaum, Aerospace Engineer, ACE–112, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: 816– 329–4146; facsimile: 816–329–4090. Is There Other Information That Relates to This Subject? (g) Luftfahrt-Bundesamt Airworthiness Directive No.D–2004–299R1, dated November 9, 2004; GROB–WERKE Service Bulletin No. 1121–052/2, dated February 14, 2005; and GROB–WERKE Service Bulletin No. 1121–052, dated September 15, 2004, also address the subject of this AD. VerDate jul<14>2003 16:19 Mar 22, 2005 Jkt 205001 Follow GROB–WERKE Service Bulletin No. MSB1121–052/2, dated February 14, 2005. May I Get Copies of the Documents Referenced in This AD? DEPARTMENT OF TRANSPORTATION (h) To get copies of the documents referenced in this AD, contact GROB– WERKE, Burkart Grob e.K., Unternehmenbereich Luft-und Raumfahrt, Lettenbachstrasse 9, 86874 TussenhausenMattsies, Germany; telephone: 011 49 8268 998 105; facsimile: 011 49 8268 998 200. To view the AD docket, go to the Docket Management Facility; U.S. Department of Transportation, 400 Seventh Street, SW., Nassif Building, Room PL–401, Washington, DC, or on the Internet at https://dms.dot.gov. This is docket number FAA–2004–19473. Federal Aviation Administration Issued in Kansas City, Missouri, on March 17, 2005. Sandra J. Campbell, Acting Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. 05–5707 Filed 3–22–05; 8:45 am] ACTION: BILLING CODE 4910–13–P PO 00000 Frm 00024 Fmt 4702 Sfmt 4702 14 CFR Part 71 [Docket No. FAA–2005–20572; Airspace Docket No. 05–ACE–9] Proposed Establishment of Class E2 Airspace; and Modification of Class E5 Airspace; Valentine, NE Federal Aviation Administration (FAA), DOT. AGENCY: Notice of proposed rulemaking. SUMMARY: This notice proposes to create a Class E2 surface area at Valentine, NE. It also proposes to modify the Class E5 airspace at Valentine, NE. DATES: Comments for inclusion in the Rules Docket must be received on or before May 2, 2005. E:\FR\FM\23MRP1.SGM 23MRP1

Agencies

[Federal Register Volume 70, Number 55 (Wednesday, March 23, 2005)]
[Proposed Rules]
[Pages 14599-14601]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 05-5707]


-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2004-19473; Directorate Identifier 2004-CE-35-AD]
RIN 2120-AA64


Airworthiness Directives; GROB-WERKE Model G120A Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

-----------------------------------------------------------------------

SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD) 
for certain GROB-WERKE Model G120A airplanes. This proposed AD would 
require you to replace the main landing gear (MLG) up-lock hook 
assembly. This proposed AD results from mandatory continuing 
airworthiness information (MCAI) issued by the airworthiness authority 
for Germany. We are issuing this proposed AD to prevent the MLG from 
becoming jammed and not extending, which could result in loss of 
control of the airplane during landing.

DATES: We must receive any comments on this proposed AD by May 10, 
2005.

ADDRESSES: Use one of the following to submit comments on this proposed 
AD:
     DOT Docket Web site: Go to https://dms.dot.gov and follow 
the instructions for sending your comments electronically.

[[Page 14600]]

     Government-wide rulemaking Web site: Go to https://
www.regulations.gov and follow the instructions for sending your 
comments electronically.
     Mail: Docket Management Facility; U.S. Department of 
Transportation, 400 Seventh Street, SW., Nassif Building, Room PL-401, 
Washington, DC 20590-0001.
     Fax: 1-202-493-2251.
     Hand Delivery: Room PL-401 on the plaza level of the 
Nassif Building, 400 Seventh Street, SW., Washington, DC between 9 a.m. 
and 5 p.m., Monday through Friday, except Federal holidays.
    To get the service information identified in this proposed AD, 
contact GROB-WERKE, Burkart Grob e.K., Unternehmenbereich Luft-und 
Raumfahrt, Lettenbachstrasse 9, 86874 Tussenhausen-Mattsies, Germany; 
telephone: 011 49 8268 998 105; facsimile: 011 49 8268 998 200.
    To view the comments to this proposed AD, go to https://dms.dot.gov. 
This is docket number FAA-2004-19473.

FOR FURTHER INFORMATION CONTACT: Karl Schletzbaum, Aerospace Engineer, 
ACE-112, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, 
Missouri 64106; telephone: 816-329-4146; facsimile: 816-329-4090.

SUPPLEMENTARY INFORMATION:

Comments Invited

    How do I comment on this proposed AD? We invite you to submit any 
written relevant data, views, or arguments regarding this proposal. 
Send your comments to an address listed under ADDRESSES. Include the 
docket number, ``FAA-2004-19473; Directorate Identifier 2004-CE-35-AD'' 
at the beginning of your comments. We will post all comments we 
receive, without change, to https://dms.dot.gov, including any personal 
information you provide. We will also post a report summarizing each 
substantive verbal contact with FAA personnel concerning this proposed 
rulemaking. Using the search function of our docket Web site, anyone 
can find and read the comments received into any of our dockets, 
including the name of the individual who sent the comment (or signed 
the comment on behalf of an association, business, labor union, etc.). 
This is docket number FAA-2004-19473. You may review the DOT's complete 
Privacy Act Statement in the Federal Register published on April 11, 
2000 (65 FR 19477-78) or you may visit https://dms.dot.gov.
    Are there any specific portions of this proposed AD I should pay 
attention to? We specifically invite comments on the overall 
regulatory, economic, environmental, and energy aspects of this 
proposed AD. If you contact us through a nonwritten communication and 
that contact relates to a substantive part of this proposed AD, we will 
summarize the contact and place the summary in the docket. We will 
consider all comments received by the closing date and may amend this 
proposed AD in light of those comments and contacts.

Docket Information

    Where can I go to view the docket information? You may view the AD 
docket that contains the proposal, any comments received, and any final 
disposition in person at the DMS Docket Offices between 9 a.m. and 5 
p.m. (eastern standard time), Monday through Friday, except Federal 
holidays. The Docket Office (telephone 1-800-647-5227) is located on 
the plaza level of the Department of Transportation NASSIF Building at 
the street address stated in ADDRESSES. You may also view the AD docket 
on the Internet at https://dms.dot.gov. The comments will be available 
in the AD docket shortly after the DMS receives them.

Discussion

    What events have caused this proposed AD? The Luftfahrt-Bundesamt 
(LBA), which is the airworthiness authority for Germany, recently 
notified FAA that an unsafe condition may exist on certain GROB-WERKE 
Model G120A airplanes. The LBA reports that the up-lock/main landing 
gear roller combination may become jammed because of contamination 
(i.e., dirt or dust) or minor misalignments of the assembly.
    What is the potential impact if FAA took no action? This condition, 
if not corrected, could cause the MLG to become jammed and to not 
extend, which could result in loss of control of the airplane during 
landing.
    Is there service information that applies to this subject? GROB-
WERKE has issued Service Bulletin No. MSB1121-052/2, dated February 14, 
2005.
    What are the provisions of this service information? The service 
bulletin includes procedures for:

--Removing the MLG up-lock hook assembly; and
--Installing the new MLG up-lock hook assembly.

    What action did the LBA take? The LBA classified this service 
bulletin as mandatory and issued German AD Number D-2004-299R1, dated 
November 9, 2004, to ensure the continued airworthiness of these 
airplanes in Germany.
    Did the LBA inform the United States under the bilateral 
airworthiness agreement? These GROB-WERKE Model G120A airplanes are 
manufactured in Germany and are type-certificated for operation in the 
United States under the provisions of section 21.29 of the Federal 
Aviation Regulations (14 CFR 21.29) and the applicable bilateral 
airworthiness agreement.
    Under this bilateral airworthiness agreement, the LBA has kept us 
informed of the situation described above.

FAA's Determination and Requirements of This Proposed AD

    What has FAA decided? We have examined the LBA's findings, reviewed 
all available information, and determined that AD action is necessary 
for products of this type design that are certificated for operation in 
the United States.
    Since the unsafe condition described previously is likely to exist 
or develop on other GROB-WERKE Model G120A airplanes of the same type 
design that are registered in the United States, we are proposing AD 
action to prevent the MLG from becoming jammed and not extending, which 
could result in loss of control of the airplane during landing.
    What would this proposed AD require? This proposed AD would require 
you to incorporate the actions in the previously-referenced service 
bulletin.
    How does the revision to 14 CFR part 39 affect this proposed AD? On 
July 10, 2002, we published a new version of 14 CFR part 39 (67 FR 
47997, July 22, 2002), which governs FAA's AD system. This regulation 
now includes material that relates to altered products, special flight 
permits, and alternative methods of compliance. This material 
previously was included in each individual AD. Since this material is 
included in 14 CFR part 39, we will not include it in future AD 
actions.

Costs of Compliance

    How many airplanes would this proposed AD impact? We estimate that 
this proposed AD affects 6 airplanes in the U.S. registry.
    What would be the cost impact of this proposed AD on owners/
operators of the affected airplanes? GROB-WERKE will provide warranty 
credit for labor and parts.

Regulatory Findings

    Would this proposed AD impact various entities? We have determined

[[Page 14601]]

that this proposed AD would not have federalism implications under 
Executive Order 13132. This proposed AD would not have a substantial 
direct effect on the States, on the relationship between the national 
Government and the States, or on the distribution of power and 
responsibilities among the various levels of government.
    Would this proposed AD involve a significant rule or regulatory 
action? For the reasons discussed above, I certify that this proposed 
AD:
    1. Is not a ``significant regulatory action'' under Executive Order 
12866;
    2. Is not a ``significant rule'' under the DOT Regulatory Policies 
and Procedures (44 FR 11034, February 26, 1979); and
    3. Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.
    We prepared a summary of the costs to comply with this proposed AD 
and placed it in the AD Docket. You may get a copy of this summary by 
sending a request to us at the address listed under ADDRESSES. Include 
``AD Docket FAA-2004-19473; Directorate Identifier 2004-CE-35-AD'' in 
your request.
    This proposed rulemaking is promulgated under the authority in 
Subtitle VII, Part A, Subpart III, Section 44701, General requirements. 
Under that section, the FAA is charged with prescribing minimum 
standards required in the interest of safety for the design of 
aircraft. This proposed regulation is within the scope of that 
authority since it corrects an unsafe condition in the design of the 
aircraft caused by the MLG from becoming jammed and not extending.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Safety.

The Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the Federal Aviation Administration proposes to amend 14 
CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

    1. The authority citation for part 39 continues to read as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

    2. The FAA amends Sec.  39.13 by adding the following new 
airworthiness directive (AD):

GROB-WERKE: Docket No. FAA-2004-19473; Directorate Identifier 2004-
CE-35-AD

When Is the Last Date I Can Submit Comments on This Proposed AD?

    (a) We must receive comments on this proposed airworthiness 
directive (AD) by May 10, 2005.

What Other ADs Are Affected by This Action?

    (b) None.

What Airplanes Are Affected by This AD?

    (c) This AD affects the following airplane models and serial 
numbers that are certificated in any category: Model G120A, as of 
serial number 85001.

What Is the Unsafe Condition Presented in This AD?

    (d) This AD is the result of a report that the main landing gear 
(MLG) may not extend because of contamination or misalignment of the 
assembly. The actions specified in this AD are intended to prevent 
the MLG from becoming jammed and not extending, which could result 
in loss of control of the airplane during landing.

What Must I Do To Address This Problem?

    (e) To address this problem, you must do the following:

------------------------------------------------------------------------
           Actions                 Compliance            Procedures
------------------------------------------------------------------------
(1) Remove MGL lock-up hook   Within 100 hours      Follow GROB-WERKE
 assembly and replace with     time-in-service       Service Bulletin
 the new MLG lock-up hook      after the effective   No. MSB1121-052/2,
 assembly.                     date of this AD,      dated February 14,
                               unless GROB-WERKE     2005.
                               Service Bulletin
                               No. MSB1121-052,
                               dated September 15,
                               2004, is already
                               incorporated.
(2) Inspect the MLG for       Prior to further      Follow GROB-WERKE
 proper operation and adjust   flight after the      Service Bulletin
 as needed.                    installation of the   No. MSB1121-052/2,
                               new MLG lock-up       dated February 14,
                               hook assembly.        2005.
------------------------------------------------------------------------

May I Request an Alternative Method of Compliance?

    (f) You may request a different method of compliance or a 
different compliance time for this AD by following the procedures in 
14 CFR 39.19. Unless FAA authorizes otherwise, send your request to 
your principal inspector. The principal inspector may add comments 
and will send your request to the Manager, Standards Office, Small 
Airplane Directorate, FAA. For information on any already approved 
alternative methods of compliance, contact Karl Schletzbaum, 
Aerospace Engineer, ACE-112, Small Airplane Directorate, 901 Locust, 
Room 301, Kansas City, Missouri 64106; telephone: 816-329-4146; 
facsimile: 816-329-4090.

Is There Other Information That Relates to This Subject?

    (g) Luftfahrt-Bundesamt Airworthiness Directive No.D-2004-299R1, 
dated November 9, 2004; GROB-WERKE Service Bulletin No. 1121-052/2, 
dated February 14, 2005; and GROB-WERKE Service Bulletin No. 1121-
052, dated September 15, 2004, also address the subject of this AD.

May I Get Copies of the Documents Referenced in This AD?

    (h) To get copies of the documents referenced in this AD, 
contact GROB-WERKE, Burkart Grob e.K., Unternehmenbereich Luft-und 
Raumfahrt, Lettenbachstrasse 9, 86874 Tussenhausen-Mattsies, 
Germany; telephone: 011 49 8268 998 105; facsimile: 011 49 8268 998 
200. To view the AD docket, go to the Docket Management Facility; 
U.S. Department of Transportation, 400 Seventh Street, SW., Nassif 
Building, Room PL-401, Washington, DC, or on the Internet at https://
dms.dot.gov. This is docket number FAA-2004-19473.

    Issued in Kansas City, Missouri, on March 17, 2005.
Sandra J. Campbell,
Acting Manager, Small Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 05-5707 Filed 3-22-05; 8:45 am]
BILLING CODE 4910-13-P
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