AC 120-42B ETOPS and Polar Ops - Code7700

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AC 120-42B 6/13/08of each airplane’s APU in-flight starting capabilities. Specifically, the certificate holder mustensure that each airplane’s APU periodically is sampled rather than repeatedly sampling thesame APUs. The certificate holder may adjust sampling intervals according to systemperformance and fleet maturity. The certificate holder and its CHDO should periodically reviewthe certificate holder’s APU in-flight start program data to ensure that the in-flight startreliability is maintained. Should the rolling 12-month APU in-flight start rate drop below95 percent, the certificate holder should initiate an investigation into any common cause effectsor systemic errors in procedures.(2) The certificate holder should include the criteria below in their APU in-flight startprogram. The certificate holder should make APU in-flight starts subject to the followingconditions:(a) In-flight APU starts do not need to be performed on ETOPS flights; however,the APU must be in the ETOPS configuration in accordance with the appropriate CMPdocument, if applicable, for credit to be allowed.(b) If in-flight APU start is performed on an ETOPS flight, the start may beattempted on the return leg.(c) The start attempt should be initiated before top of descent, or at such time thatwill ensure a 2-hour cold soak at altitude before the start attempt.(d) Within route or track constraints, the objective would be met by attempting astart near the highest altitude assigned the route or track, and the final attempt near the loweraltitude limits of the route or track, as defined by ATC. These altitudes should be representativeof the ETOPS routes flown.(e) If the APU fails to start on the first attempt, subsequent start attempts may bemade within the limits of the airframe and APU manufacturer’s recommended procedures.(3) The certificate holder must report any operationally required APU in-flight startfailures occurring during actual ETOPS operations to its CHDO within 96 hours. The certificateholder also must report any occurrences of an ETOPS configured APU in-flight unsuccessfulstart attempt occurring during routine sampling (which exceed the airframe and APUmanufacturer design specifications) to its CHDO. The final report should include correctiveactions taken as well as the status of corrective action programs and fleet upgrades.n. Configuration Maintenance and Procedures (CMP).(1) The CMP Standard specifies any additional configuration, maintenance oroperational requirement that is uniquely applicable to ETOPS. The requirements in the CMP areestablished by the FAA at the time of initial ETOPS type design approval of the airplane-enginecombination. The CMP document typically is published and maintained by the airplanemanufacturer and includes identified CMP requirements. Airplane manufacturers may continueto release CMP revisions beyond the basic revision level required for ETOPS. The CMP revisionlevels required for specific airplane-engine combinations are typically listed in the front of theCMP or may be controlled through issuance of customized CMP documents. The certificatePage 22 Par 301
6/13/08 AC 120-42Bholder must implement the basic configuration, maintenance, and operating procedures standard,identified in the CMP, before beginning ETOPS operations unless the CMP includes anincorporation schedule with a later date than the beginning of the certificate holder’s ETOPSoperations. If a CMP document exists for an ETOPS certificate holder’s airplane, the certificateholder must ensure that all of the following apply:(a) Configuration features are installed in the airplanes and engines;(b) Maintenance procedures are incorporated into the maintenance program;(c) Demonstrated capabilities are incorporated into the flight operations manual andthe minimum equipment list, as required; and(d) Operators must coordinate any deviation from the manufacturer’s CMPrequirements with the CHDO or Aircraft Certification Office, as required by the CMP document.(2) Each certificate holder must develop a system to ensure all CMP requirementsremain incorporated in its airplanes, programs, and manuals throughout the operational life ofeach airplane, for as long as they operate in ETOPS.(3) The FAA will mandate any subsequent configuration, maintenance, or proceduralchanges necessary for continued safe ETOPS operations through the Airworthiness Directive(AD) process. The certificate holder should review and consider voluntarily incorporating anyrevised CMP standard that enhances airplane reliability and/or performance.(4) The certificate holder should provide its CHDO a matrix detailing the CMPstandard for its proposed ETOPS fleet. The matrix should specifically include each CMP itemnumber, revision level, item description, and reference documentation describing theincorporation method and date.o. Procedural Changes. Refer to Chapter 5, paragraph 502 for ETOPS maintenance andtraining program changes.302. ETOPS MAINTENANCE TRAINING REQUIREMENTS.a. The certificate holder is responsible for ensuring that all maintenance personnel whoperform maintenance on its ETOPS airplanes, including repair stations, vendors, and contractmaintenance, have received adequate technical training for the specific airplane-enginecombination it intends to operate in ETOPS. The certificate holder should review the existingairplane-engine combination maintenance training program with its CHDO to ensure that itadequately provides the necessary training.b. Additionally, the certificate holder must develop ETOPS specific training that focuseson the special nature of ETOPS and take measures to insure that this training is given to allpersonnel involved in ETOPS. ETOPS specific training is in addition to the certificate holder’saccepted maintenance training program used to qualify individuals for specific airplanes andengines and may be included in the accepted maintenance training curricula. It thus, becomes thecertificate holder’s ETOPS training program. The goal of this training is to ensure that allPar 301 Page 23
Page 1 and 2: U.S. Departmentof TransportationFed
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Page 7 and 8: 6/13/08 AC 120-42BCHAPTER 2. BACKGR
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Page 15 and 16: 6/13/08 AC 120-42Bdecisions success
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Page 35 and 36: 6/13/08 AC 120-42Bflight crewmember
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Page 43 and 44: 6/13/08 AC 120-42B(1) 75-minute ETO
Page 45 and 46: 6/13/08 AC 120-42Brobust to protect
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Page 56 and 57: AC 120-42B 6/13/8Appendix 19. ETOPS
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AC 120-42B ETOPS and Polar Ops - Code7700

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