Federal Aviation Administration October 2017 – Federal Register Recent Federal Regulation Documents
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Membership in the National Parks Overflights Advisory Group
The Federal Aviation Administration (FAA) and the National Park Service (NPS) invite interested persons to apply to fill one current vacancy and one upcoming vacancy on the National Parks Overflights Advisory Group (NPOAG). This notice invites interested persons to apply to fill the openings, one of which represents air tour operator interests and one of which represents Native American concerns.
Eighteenth Tactical Operations Committee (TOC) Meeting
The FAA is issuing this notice to advise the public of a meeting of the Eighteenth TOC Meeting.
Thirteenth RTCA SC-229 406 MHz ELT Joint Plenary With EUROCAE WG-98
The FAA is issuing this notice to advise the public of a meeting of Thirteenth RTCA SC-229 406 MHz ELT Joint Plenary with EUROCAE WG-98.
Petition for Exemption; Summary of Petition Received; Airlines for America
This notice contains a summary of a petition seeking relief from specified requirements of Federal Aviation Regulations. The purpose of this notice is to improve the public's awareness of, and participation in, the FAA's exemption process. Neither publication of this notice nor the inclusion or omission of information in the summary is intended to affect the legal status of the petition or its final disposition.
Third RTCA SC-236 Joint Plenary With EUROCAE WG-96
The FAA is issuing this notice to advise the public of a meeting of Third RTCA SC-236, Wireless Airborne Intra Communications (WAIC), joint Plenary with EUROCAE WG-96.
Special Conditions: Boeing Model 777-300ER Airplanes; Passenger-Cabin High-Wall Suites
These special conditions are issued for Boeing Model 777-300ER airplanes with high-wall suites installed in the passenger cabin. This installation is novel or unusual, and the applicable airworthiness regulations do not contain adequate or appropriate safety standards for this interior configuration. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.
Airworthiness Directives; Bombardier, Inc., Airplanes
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604 Variants) airplanes. This AD was prompted by reports of fuel leaks in the engine and auxiliary power unit (APU) electrical fuel pump (EFP) cartridge/canister electrical connectors and conduits. This AD requires repetitive inspections for fuel leakage at the engine and APU fuel pumps, and related investigative and corrective actions if necessary. We are issuing this AD to address the unsafe condition on these products.
Airworthiness Directives; The Boeing Company Airplanes
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-200, -200C, -300, -400, and -500 series airplanes. This AD was prompted by reports of skin doublers that disbonded from their skin panels. This AD requires repetitive inspections of fuselage skin panels, and applicable on-condition actions. We are issuing this AD to address the unsafe condition on these products.
Petition for Exemption; Summary of Petition Received
This notice contains a summary of a petition seeking relief from specified requirements of Federal Aviation Regulations. The purpose of this notice is to improve the public's awareness of, and participation in, this aspect of the FAA's regulatory activities. Neither publication of this notice nor the inclusion or omission of information in the summary is intended to affect the legal status of the petition or its final disposition.
Petition for Exemption; Summary of Petition Received
This notice contains a summary of a petition seeking relief from specified requirements of Federal Aviation Regulations. The purpose of this notice is to improve the public's awareness of, and participation in, this aspect of the FAA's regulatory activities. Neither publication of this notice nor the inclusion or omission of information in the summary is intended to affect the legal status of the petition or its final disposition.
Airworthiness Directives; Airbus Airplanes
We propose to adopt a new airworthiness directive (AD) for all Airbus Model A318-111 and -112 airplanes; Model A319-111, -112, -113, - 114, and -115 airplanes; Model A320-211, -212, -214, and -216 airplanes; and Model A321-111, -112, -211, -212, and -213 airplanes. This proposed AD was prompted by a review of maintenance instructions for a blend repair of the snout diameter of the main beam assembly of the forward engine mount that would create an excessive gap between the bearing mono-ball and the snout. This proposed AD would require modifying the main beam assembly of the forward engine mount. We are proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Dassault Aviation Airplanes
We propose to adopt a new airworthiness directive (AD) for all Dassault Aviation Model FAN JET FALCON, FAN JET FALCON SERIES D, E, F, and G airplanes; and certain Model MYSTERE-FALCON 20-C5, 20-D5, 20-E5, and 20-F5 airplanes. This proposed AD was prompted by reports of the collapse of the main landing gear on touchdown. This proposed AD would require an electrical modification of the landing gear sequence logic. We are proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Dassault Aviation Airplanes
We propose to adopt a new airworthiness directive (AD) for certain Dassault Aviation Model MYSTERE-FALCON 900, FALCON 900EX, FALCON 2000, and FALCON 2000EX airplanes. This proposed AD was prompted by reports of a loose screw on certain slat mechanical stop assemblies, and punctures in certain fuel caps. This proposed AD would require a one-time inspection, and corrective action if necessary. We are proposing this AD to address the unsafe condition on these products.
Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters
We are adopting a new airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-92A helicopters. This AD requires adding operating limitations to a rotorcraft flight manual (RFM). This AD is prompted by test results showing decoupling of the flight director (FD) in certain flight conditions. The actions of this AD are intended to address an unsafe condition on these products.
Airworthiness Directives; Airbus Airplanes
We are superseding Airworthiness Directive (AD) 2015-05-02, which applied to all Airbus Model A318 and A319 series airplanes; Model A320-211, -212, -214, -231, -232, and -233 airplanes; and Model A321-111, -112, -131, -211, -212, -213, - 231, and -232 airplanes. AD 2015-05-02 required revising the maintenance or inspection program to incorporate new, more restrictive airworthiness limitations. This new AD requires revising the maintenance or inspection program to incorporate new or revised structural inspection requirements and adds airplanes to the applicability. This AD was prompted by an evaluation by the design approval holder (DAH), which indicates that principal structural elements and certain life-limited parts are subject to widespread fatigue damage (WFD). We are issuing this AD to address the unsafe condition on these products.
Airworthiness Directives; British Aerospace Regional Aircraft Airplanes
We propose to supersede Airworthiness Directive (AD) 2007-08- 06 for British Aerospace Regional Aircraft Models HP.137 Jetstream Mk.1, Jetstream Series 200 and 3101, and Jetstream Model 3201 airplanes. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as the need for airworthiness limitations for critical components in the main and nose landing gear assemblies. We are issuing this proposed AD to require actions to address the unsafe condition on these products.
Airworthiness Directives; Embraer S.A. Airplanes
We are adopting a new airworthiness directive (AD) for certain Embraer S.A. Model ERJ 170 airplanes and Model ERJ 190-100 STD, -100 LR, -100 IGW, -200 STD, -200 LR, and -200 IGW airplanes. This AD was prompted by an evaluation by the design approval holder indicating that the forward pressure bulkhead is subject to widespread fatigue damage. This AD requires repetitive detailed inspections of the web aft face of the forward pressure bulkhead for any cracking and discrepancy, and repair if necessary. This AD also requires modification of the forward pressure bulkhead, which would terminate the inspections. We are issuing this AD to address the unsafe condition on these products.
Airworthiness Directives; Airbus Airplanes
We are adopting a new airworthiness directive (AD) for all Airbus Model A310 series airplanes. This AD was prompted by a revision of certain airworthiness limitation items (ALI) documents, which require more restrictive maintenance requirements and airworthiness limitations. This AD requires revising the maintenance or inspection program to incorporate the maintenance requirements and airworthiness limitations. We are issuing this AD to address the unsafe condition on these products.
Airworthiness Directives; Airbus Airplanes
We are adopting a new airworthiness directive (AD) for all Airbus Model A300 series airplanes. This AD was prompted by a report of reduction of the de-icing performance of the pitot probe over time that could remain hidden to the flight crew. This AD requires repetitive detailed inspections of the pitot probe heater insulation resistance, and replacement of the pitot probe heater if necessary. We are issuing this AD to address the unsafe condition on these products.
Establishment of Class E Airspace; Rosebud, SD
This action establishes Class E airspace at Rosebud, SD. Controlled airspace is necessary to accommodate new special instrument approach procedures developed at Rosebud Sioux Tribal Airport, for the safety and management of instrument flight rules (IFR) operations at the airport.
Airworthiness Directives; Dassault Aviation Airplanes
We are adopting a new airworthiness directive (AD) for all Dassault Aviation Model FAN JET FALCON, FAN JET FALCON SERIES C, D, E, F, and G; and Model MYSTERE-FALCON 20-C5, 20-D5, 20-E5, and 20-F5 airplanes. This AD was prompted by reports of defective fire extinguisher tubes. This AD requires replacement of the affected fire extinguisher tubes with improved fire extinguisher tubes. We are issuing this AD to address the unsafe condition on these products.
Airworthiness Directives; Airbus Airplanes
We are adopting a new airworthiness directive (AD) for certain Airbus Model A300 B4-600, B4-600R, and F4-600R series airplanes, and Model A300 C4-605R Variant F airplanes (collectively called Model A300- 600 series airplanes); and Model A310 series airplanes. This AD was prompted by a report of cracking in the door sill area of the aft cargo door. This AD requires repetitive inspections of the aft cargo door lower torsion box area, and corrective actions if necessary. We are issuing this AD to address the unsafe condition on these products.
Airworthiness Directives; Saab AB, Saab Aeronautics (Formerly Known as Saab AB, Saab Aerosystems) Airplanes
We are adopting a new airworthiness directive (AD) for certain Saab AB, Saab Aeronautics Model 340A (SAAB/SF340A) and SAAB 340B airplanes. This AD was prompted by the determination that new inspection tasks for the drag brace support fitting of the main landing gear (MLG) and corrosion prevention and control program (CPCP) related tasks are necessary. This AD requires revising the maintenance or inspection program, as applicable, to incorporate airworthiness limitations, including new inspection tasks for the drag brace support fitting of the MLG and to implement CPCP related tasks. We are issuing this AD to address the unsafe condition on these products.
Airworthiness Directives; Gulfstream Aerospace LP (Type Certificate Previously Held by Israel Aircraft Industries, Ltd.) Airplanes
We are adopting a new airworthiness directive (AD) for certain Gulfstream Aerospace LP Model Gulfstream 100, Astra SPX, and 1125 Westwind Astra airplanes. This AD was prompted by a report indicating that the main entrance door (MED) opened during flight, and by the determination that the ``CABIN DOOR UNLOCK'' crew alerting system (CAS) message may extinguish before the handle latch pin is fully engaged. This AD requires accomplishing an updated rigging procedure for the adjustment of the MED microswitch. We are issuing this AD to address the unsafe condition on these products.
Airworthiness Directives; Gulfstream Aerospace LP (Type Certificate Previously Held by Israel Aircraft Industries, Ltd.) Airplanes
We are adopting a new airworthiness directive (AD) for certain Gulfstream Aerospace LP Model Gulfstream G150 airplanes. This AD was prompted by a report indicating that the main entrance door (MED) opened during flight, and by the determination that the ``CABIN DOOR UNLOCK'' crew alerting system (CAS) message may extinguish before the handle latch pin is fully engaged. This AD requires accomplishing an updated rigging procedure for the adjustment of the MED microswitch. We are issuing this AD to address the unsafe condition on these products.
Thirty Seventh RTCA SC-216 Aeronautical Systems Security Plenary
The FAA is issuing this notice to advise the public of a meeting of Thirty Seventh RTCA SC-216 Plenary. This is a subcommittee to RTCA.
Airworthiness Directives; Bombardier, Inc., Airplanes
We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-1A11 (CL-600), CL-600-2A12 (CL- 601 Variant), and CL-600-2B16 (CL-601-3A, CL-601-3R, and CL-604 Variants) airplanes. This proposed AD was prompted by reports of fractured rudder pedal tubes on the pilot-side rudder bar assembly. This proposed AD would require repetitive inspections of the rudder pedal tubes for cracking and corrective actions if necessary. Replacement of both pilot-side rudder bar assemblies is terminating action for the inspections. We are proposing this AD to address the unsafe condition on these products.
Standard Instrument Approach Procedures, and Takeoff Minimums and Obstacle Departure Procedures; Miscellaneous Amendments
This rule amends, suspends, or removes Standard Instrument Approach Procedures (SIAPs) and associated Takeoff Minimums and Obstacle Departure Procedures for operations at certain airports. These regulatory actions are needed because of the adoption of new or revised criteria, or because of changes occurring in the National Airspace System, such as the commissioning of new navigational facilities, adding new obstacles, or changing air traffic requirements. These changes are designed to provide for the safe and efficient use of the navigable airspace and to promote safe flight operations under instrument flight rules at the affected airports.
Standard Instrument Approach Procedures, and Takeoff Minimums and Obstacle Departure Procedures; Miscellaneous Amendments
This rule establishes, amends, suspends, or removes Standard Instrument Approach Procedures (SIAPs) and associated Takeoff Minimums and Obstacle Departure Procedures (ODPs) for operations at certain airports. These regulatory actions are needed because of the adoption of new or revised criteria, or because of changes occurring in the National Airspace System, such as the commissioning of new navigational facilities, adding new obstacles, or changing air traffic requirements. These changes are designed to provide safe and efficient use of the navigable airspace and to promote safe flight operations under instrument flight rules at the affected airports.
Standard Instrument Approach Procedures, and Takeoff Minimums and Obstacle Departure Procedures; Miscellaneous Amendments
This rule amends, suspends, or removes Standard Instrument Approach Procedures (SIAPs) and associated Takeoff Minimums and Obstacle Departure Procedures for operations at certain airports. These regulatory actions are needed because of the adoption of new or revised criteria, or because of changes occurring in the National Airspace System, such as the commissioning of new navigational facilities, adding new obstacles, or changing air traffic requirements. These changes are designed to provide for the safe and efficient use of the navigable airspace and to promote safe flight operations under instrument flight rules at the affected airports.
Standard Instrument Approach Procedures, and Takeoff Minimums and Obstacle Departure Procedures; Miscellaneous Amendments
This rule establishes, amends, suspends, or removes Standard Instrument Approach Procedures (SIAPs) and associated Takeoff Minimums and Obstacle Departure Procedures (ODPs) for operations at certain airports. These regulatory actions are needed because of the adoption of new or revised criteria, or because of changes occurring in the National Airspace System, such as the commissioning of new navigational facilities, adding new obstacles, or changing air traffic requirements. These changes are designed to provide safe and efficient use of the navigable airspace and to promote safe flight operations under instrument flight rules at the affected airports.
Airworthiness Directives; Fokker Services B.V. Airplanes
We are revising an earlier proposal to supersede Airworthiness Directive (AD) 2012-22-15, which applies to all Fokker Services B.V. Model F28 Mark 0070 and Mark 0100 airplanes. This action revises the notice of proposed rulemaking (NPRM) by proposing to require incorporating new airworthiness limitations into the maintenance or inspection program, as applicable. We are proposing this AD to address the unsafe condition on these products. Since these actions would impose an additional burden over those in the NPRM, we are reopening the comment period to allow the public the chance to comment on these proposed changes.
Special Conditions: TTF Aerospace Inc., Boeing Model 767-300F Series Airplane; Installation of Main-Deck Crew-Rest Compartment
These special conditions are issued for the Boeing Model 767- 300F series airplane. This airplane, as modified by TTF Aerospace Inc., will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport- category airplanes. This design feature is a crew-rest compartment located in a Class E cargo compartment on the main deck of the airplane. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.
Special Conditions: Bombardier Inc. Model BD-700-2A12 and BD-700-2A13 Airplanes; Airplane Electronic-System Security Protection From Unauthorized Internal Access
This document corrects an error that appeared in Docket No. FAA-2015-6359, Special Conditions No. 25-633-SC, which was published in the Federal Register on August 22, 2016. The error is an incorrect word in the title of the final special conditions document.
Special Conditions: ALOFT AeroArchitects, Boeing Model 737-800 Airplanes; Aircraft Electronic System Security Protection From Unauthorized External Access
These special conditions are issued for the Boeing Model 737- 800 airplane. These airplanes, as modified by ALOFT AeroArchitects (ALOFT), will have a novel or unusual design feature when compared to the state of technology envisioned in the airworthiness standards for transport-category airplanes. This design feature is a Wireless Access Point (WAP), and connection of an improved Wireless Quick Access Recorder (WQAR) to the satellite communications (SATCOM) system, to provide in-flight access to information, in the WQAR, to ground personnel. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.
Petition for Exemption; Summary of Petition Received
This notice contains a summary of a petition seeking relief from specified requirements of Federal Aviation Regulations. The purpose of this notice is to improve the public's awareness of, and participation in, this aspect of the FAA's regulatory activities. Neither publication of this notice nor the inclusion or omission of information in the summary is intended to affect the legal status of the petition or its final disposition.
Amendment of Restricted Areas R-3004A and R-3004B and Establishment of R-3004C; Fort Gordon, GA
This action modifies the restricted areas at Fort Gordon, GA to further subdivide the vertical limits of the airspace. The designated altitudes for R-3004A and R-3004B are realigned and a new subarea, designated R-3004C, is established above R-3004B. The FAA is taking this action to allow for more efficient use of the airspace during periods when military activities only require restricted airspace below 3,500 feet MSL. The modifications are fully contained within the existing lateral and vertical boundaries of the restricted airspace.
Petition for Exemption; Summary of Petition Received; The Boeing Company
This notice contains a summary of a petition seeking relief from specified requirements of Federal Aviation Regulations. The purpose of this notice is to improve the public's awareness of, and participation in, the FAA's exemption process. Neither publication of this notice nor the inclusion or omission of information in the summary is intended to affect the legal status of the petition or its final disposition.
Establishment of Class E Airspace; Onida, SD
This action establishes Class E airspace at Onida, SD. Controlled airspace is necessary to accommodate new special instrument approach procedures developed at Onida Municipal Airport, for the safety and management of instrument flight rules (IFR) operations at the airport.
Amendment of Class E Airspace; Hebron, NE
This action modifies Class E airspace extending upward from 700 feet above the surface at Hebron Municipal Airport, Hebron, NE. This action is necessary due to the decommissioning of the Hebron non- directional radio beacon (NDB), and cancellation of the NDB approach. This action enhances the safety and management of standard instrument approach procedures for instrument flight rules (IFR) operations at the airport.
Proposed Amendment of VOR Federal Airways V-20, V-31, V-33, V-308, and V-433; and Revocation of V-379; in the Vicinity of Nottingham, MD
This action proposes to modify VHF Omnidirectional Range (VOR) Federal airways V-20, V-31, V-33, V-308, and V-433; and remove V-379; in the vicinity of Nottingham, MD. This action is necessary due to the planned decommissioning of the Nottingham, MD, VORTAC navigation aid, which provides navigation guidance for portions of the above routes. The Nottingham VORTAC is being decommissioned as part of the VOR Minimum Operational Network (MON) program.
Amendment of Class E Airspace; Clarinda, IA
This action modifies Class E airspace extending upward from 700 feet above the surface at Schenck Field, Clarinda, IA. This action is required due to the decommissioning of the Clarinda non-directional radio beacon (NDB) and the cancellation of the associated instrument approach procedures. This action enhances the safety and management of instrument flight rules (IFR) operations at the airport.
Proposed Amendment of Class E Airspace; Charles City, IA
This action proposes to modify Class E airspace extending upward from 700 feet above the surface at Northeast Iowa Regional Airport, Charles City, IA. The FAA is proposing this action due to the cancellation of the instrument approach procedures associated with the decommissioned Charles City non-directional radio beacon (NDB). Additionally, the name of the airport would be updated to coincide with the FAA's aeronautical database. This action would enhance the safety and management of instrument flight rules (IFR) operations at this airport.
Amendment of Class E Airspace; Canadian, TX; and Wheeler, TX
This action amends Class E airspace extending upward from 700 feet above the surface at Hemphill County Airport, Canadian, TX, and Wheeler Municipal Airport, Wheeler, TX. This action is due to the decommissioning of the Sayre co-located VHF omnidirectional range and tactical air navigation system (VORTAC) facility, which provided navigation guidance for the instrument procedures to these airports. The VORTAC is being decommissioned as part of the VHF omnidirectional range (VOR) Minimum Operational Network (MON) Program. Additionally, the geographic coordinates of the airports are being adjusted to coincide with the FAA's aeronautical database.
Notice of Release and Permanent Closure of the St. Clair Regional Airport, St. Clair, Missouri
The FAA is publishing this notice of a pending action required by statute. Public Law 113-285 requires the FAA to release the City of St. Clair, Missouri, from all restrictions, conditions, and limitations on the use, encumbrance, conveyance, and closure of the St. Clair Regional Airport upon the satisfaction of certain conditions of the St. Clair Regional Airport (K39). On August 1, 2017, the City of St. Clair, Missouri provided written notice to the Federal Aviation Administration (FAA) of its intent to permanently close the St. Clair Regional Airport (K39), in St. Clair, Missouri. The City of St. Clair provided this notice to the FAA in excess of 30 days before the permanent closure. The FAA hereby publishes the City of St. Clair's notice of permanent closure of the St. Clair Regional Airport.
Amendment of Class E Airspace; Medford, WI and Waupaca, WI
This action amends Class E airspace extending upward from 700 feet above the surface at Taylor County Airport, Medford, WI and Waupaca Municipal Airport, Waupaca, WI, to accommodate new standard instrument approach procedures for instrument flight rules (IFR) operations at these airports. This action is necessary due to the decommissioning of the Medford and Waupaca non directional radio beacons (NDB), and cancellation of NDB approaches. Also, an error in the geographic coordinates of Waupaca Municipal Airport and Taylor County Airport are corrected. This action enhances the safety and management of IFR operations at these airports.
Amendment of Class D and Class E Airspace; Elizabeth City, NC
This action removes the Notice to Airmen (NOTAM) part-time status from the legal description of the Class E airspace area designated as an extension at Elizabeth City CGAS/Regional Airport, Elizabeth City, NC, and adds NOTAM part-time language information to Class E surface area airspace. This action brings the airspace descriptions in line with the airspace hours listed in the applicable Chart Supplement. This action also updates the geographic coordinates of the airport and the Woodville non-directional radio beacon (NDB) in the associated Class D and E airspace. Also, an editorial change is made to the Class D and E surface area airspace legal descriptions, replacing Airport/Facility Directory with the term Chart Supplement.
Notice of Intent To Release Certain Properties From All Terms, Conditions, Reservations and Restrictions of a Quitclaim Deed Agreement Between Sarasota Manatee Airport Authority and the Federal Aviation Administration for the Sarasota-Bradenton International Airport, Sarasota, FL
The FAA hereby provides notice of intent to release certain airport properties 6.49 acres at the Sarasota-Bradenton International Airport, Sarasota, FL from the conditions, reservations, and restrictions as contained in a Quitclaim Deed agreement between the FAA and the Sarasota Manatee Airport Authority, dated December 16, 1947. The release of property will allow Sarasota Manatee Airport Authority to dispose of the property for other than aeronautical purposes. The property is located 1361 West University Parkway in Manatee County. The parcel is currently designated as commercial/industrial land. The property will be released of its federal obligations for commercial development. The fair market value of this parcel has been determined to be $1,265,000. Documents reflecting the Sponsor's request are available, by appointment only, for inspection at the Sarasota-Bradenton International Airport and the FAA Airports District Office.
Airworthiness Directives; Pratt & Whitney Division Turbofan Engines
We propose to adopt a new airworthiness directive (AD) for all Pratt & Whitney Division (PW) PW4052, PW4056, PW4060, PW4062, PW4062A, PW4152, PW4156A, PW4158, PW4460, and PW4462 turbofan engine models, including engines identified with suffixes -1C, -1E, -3, -3A, or -3B. This proposed AD was prompted by the discovery of multiple cracked 4th stage low-pressure turbine (LPT) air seals in the fleet. This proposed AD requires removal from service of certain air seals. We are proposing this AD to correct the unsafe condition on these products.
Airworthiness Directives; The Boeing Company Airplanes
We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 737-100, -200, and -200C series airplanes. This AD was prompted by a report of incidents involving fatigue cracking in transport category airplanes that are approaching or have exceeded their design service objective and a structural reevaluation that was conducted by the manufacturer. This AD requires revising the maintenance or inspection program, as applicable, to add supplemental inspections. This AD also requires inspections to detect cracks in each structural significant item (SSI), and repair of any cracked structure. We are issuing this AD to address the unsafe condition on these products.
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