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Parts · Flight controls

Transmission

146 failure reports named the transmission in the last ten years, 465 since 1995, most often on the Boeing 757; the condition most often found was "making metal". 65 FAA approvals let 3 companies make a replacement transmission, Hamilton Sundstrand Corporation holding the most (38).

Reports by year

071421281995200020052010201520202025142026
Reports by year, as a table
reports
199528
199623
199722
199812
199921
200022
200124
200217
20037
200414
200510
200611
200715
20085
200914
201012
201110
201216
20139
201416
201511
20169
201711
20189
20195
202016
202111
202210
202316
202425
202520
202614

Which system the reports file it under last ten years

Flight controls91Rotorcraft systems52Electrical power2Heating, ice protection and utility systems1
Reports by system, as a table
reports
Flight controls91
Rotorcraft systems52
Electrical power2
Heating, ice protection and utility systems1

Models most often reporting it last ten years

Boeing 75761Bell 40729Boeing 73722Airbus Helicopters EC-135 now H1355Boeing-Vertol 2345Embraer EMB-145 ERJ 1454Messerschmitt-Bolkow-Blohm BK 1174Agusta Aerospace Corp AW1192Agusta Spa A1192Hughes 369 500 series helicopters2Sikorsky S-612Airbus A3001
Models most reported, as a table
reports
Boeing 75761
Bell 40729
Boeing 73722
Airbus Helicopters EC-135 now H1355
Boeing-Vertol 2345
Embraer EMB-145 ERJ 1454
Messerschmitt-Bolkow-Blohm BK 1174
Agusta Aerospace Corp AW1192
Agusta Spa A1192
Hughes 369 500 series helicopters2
Sikorsky S-612
Airbus A3001

How it failed the condition found, last ten years

making metal31tripped23failed15faulted15malfunctioned8faulty7contaminated6inoperative5underserviced3unknown3
Conditions found, as a table
reports
making metal31
tripped23
failed15
faulted15
malfunctioned8
faulty7
contaminated6
inoperative5
underserviced3
unknown3

Engines most often reporting it

Allison (Rolls-Royce) 250-C47B 7Pratt & Whitney Canada PT6B-37A 3Pratt & Whitney Canada PW206B2 1Turbomeca (Safran) ARRIUS 2B2 1

Approved replacement parts 65 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a transmission and sell it as an approved part for the models named. These are the companies holding such approvals for a transmission:

Hamilton Sundstrand Corporation 38Moog INC 26Pacific Sky Supply INC 1

For these models most: Boeing 777 (26), Boeing 747 (14), Bombardier CL-600 Challenger and CRJ (5), Mcdonnell Douglas DC-9 (3), Boeing 737 (3), Mcdonnell Douglas MD-10 (1), Mcdonnell Douglas DC-10 (1), Mcdonnell Douglas Aircraft Co MD-88 (1), Boeing 727 (1), Boeing 707 (1).

MakerPartReplacesFitsGrantedStatus
Moog INCTransmission Assy-P 256W3210-7256W3210-7BOEING 777-200 SERIES, 777-200LR SERIES,...2022-11-18current
Moog INCTransmission Assy-P 256W3110-7256W3110-7BOEING 777-200 SERIES, 777-200LR SERIES,...2022-11-18current
Moog INCTRANSMISSION ASSY - PO 256W3210-10256W3210-10BOEING 777-200LR SERIES, 777-300ER SERIES,...2022-10-14current
Moog INCTRANSMISSION ASSY - POS 256W3310-8256W3310-8BOEING 777-200 SERIES, 777-300 SERIES2022-10-14current
Moog INCTRANSMISSION ASSY - P 256W3210-13256W3210-13BOEING 777-200 SERIES, 777-200LR SERIES,...2022-10-14current
Moog INCTRANSMISSION ASSY - P 256W3410-5256W3410-5BOEING 777-200 SERIES, 777-200LR SERIES,...2022-10-14current
Moog INCTRANSMISSION ASSY - P 256W3310-12256W3310-12BOEING 777-200LR, 777-300ER SERIES, 777F SERIES2022-10-14current
Moog INCTRANSMISSION ASSY - POS 256W3310-10256W3310-10BOEING 777-200LR, 777-300ER SERIES, 777F SERIES2022-10-14current
Moog INCTRANSMISSION ASSY - POS 256W3410-12256W3410-12BOEING 777-200LR, 777-300ER SERIES, 777F SERIES2022-10-14current
Moog INCTRANSMISSION ASSY 256W3310-9256W3310-9BOEING 777-200LR, 777-300ER SERIES, 777F SERIES2022-10-14current
Moog INCTRANSMISSION ASSY - P 256W3410-20256W3410-20BOEING 777-200LR, 777-300ER SERIES, 777F SERIES2022-10-14current
Moog INCTRANSMISSION ASSY - POS 256W3410-11256W3410-11BOEING 777-200LR, 777-300ER SERIES, 777F SERIES2022-10-14current
Moog INCTRANSMISSION ASSY 256W3110-3256W3110-3BOEING 777-200 SERIES, 777-200LR SERIES,...2022-10-14current
Moog INCTRANSMISSION ASSY - P 256W3410-19256W3410-19BOEING 777-200LR SERIES, 777-300ER SERIES,...2022-10-14current
Moog INCTRANSMISSION ASSY - P 256W3410-6256W3410-6BOEING 777-200 SERIES, 777-200LR SERIES,...2022-10-14current
Moog INCTRANSMISSION ASSY - P 256W3210-14256W3210-14BOEING 777-200 SERIES, 777-200LR SERIES,...2022-10-14current
Moog INCTRANSMISSION ASSY 256W3110-8256W3110-8BOEING 777-200 SERIES, 777-200LR SERIES,...2022-10-14current
Moog INCTRANSMISSION ASSY - P 256W3410-17256W3410-17BOEING 777-200LR, 777-300ER SERIES, 777F SERIES2022-10-14current
Moog INCTRANSMISSION ASSY 256W3210-8256W3210-8BOEING 777-200 SERIES, 777-300 SERIES2022-10-14current
Moog INCTRANSMISSION ASSY - P 256W3410-18256W3410-18BOEING 777-200LR2022-10-14current
Moog INCTRANSMISSION ASSY - POS 256W3310-7256W3310-7BOEING 777-200 SERIES, 777-300 SERIES2022-10-14current
Moog INCTRANSMISSION ASSY - P 256W3410-9256W3410-9BOEING 777-200 SERIES, 777-200LR SERIES,...2022-10-14current
Moog INCTRANSMISSION ASSY 256W3110-9256W3110-9BOEING 777-200 SERIES, 777-200LR, 777-300 SERIES2022-10-14current
Moog INCTRANSMISSION ASSY - POS 256W3210-9256W3210-9BOEING 777-200LR, 777-300ER SERIES, 777F SERIES2022-10-14current
Moog INCTRANSMISSION ASSY - POS 256W3310-5256W3310-5BOEING 777-200 SERIES, 777-300 SERIES2022-10-14current
Moog INCTRANSMISSION ASSY - POS 256W3310-6256W3310-6BOEING 777-200 SERIES, 777-300 SERIES2022-10-14current
Hamilton Sundstrand CorporationTransmission, Outline 700842ABoeing 10-61066-1Boeing 707-300B Series, 707-300C Series, 727 Series2003-02-03current
Hamilton Sundstrand CorporationTransmission, Outline 707304EBoeing 707304EMcDonnell Douglas MD10-10F, MD10-30F.2000-12-04current
Hamilton Sundstrand CorporationTransmission, Outline Model 60AGD04 696233BBoeing 696233BMcDonnell Douglas DC-9-31, -32, -32F1999-04-04current
Hamilton Sundstrand CorporationTransmission, Outline 707304DBoeing P/N 707304DBoeing DC-10-301998-02-17current
Hamilton Sundstrand CorporationTransmission, Outline 707304EBoeing P/N 707304EBoeing DC-10-10, -10F, -301998-02-17current
Hamilton Sundstrand CorporationTransmission 731633BBombardier 731633Bombardier, Inc. CL-600-2B16, (CL-601-3A), (CL-601-3R)1997-02-12current
Hamilton Sundstrand CorporationTransmission 696233AMcDonnell Douglas 696233AMcDonnell Douglas DC-9-11, -14, -151996-10-02current
Hamilton Sundstrand CorporationTransmission 704185CBoeing P/N 60B00014-20Boeing 747-1001996-03-26current
Hamilton Sundstrand CorporationTransmission 705117CBoeing P/N 60B00014-6Boeing 747-1001996-03-26current
Hamilton Sundstrand CorporationTransmission 699647BBoeing P/N 10-61223-2Boeing 737-100, 2001996-03-26current
Hamilton Sundstrand CorporationTransmission 699647ABoeing P/N 10-61223-2Boeing 737-100, 2001996-03-26current
Hamilton Sundstrand CorporationTransmission 705117BBoeing P/N 60B00014-6Boeing 747-1001996-03-26current
Hamilton Sundstrand CorporationTransmission 705117HBoeing P/N 60B00014-17Boeing 747-2001996-03-26current
Hamilton Sundstrand CorporationTransmission 704185BBoeing P/N 60B00014-19Boeing 747-2001996-03-26current
Hamilton Sundstrand CorporationTransmission 705117LBoeing P/N 60B00014-26Boeing 747-200, 3001996-03-26current
Hamilton Sundstrand CorporationTransmission 705117FBoeing P/N 60B00014-13Boeing 747-2001996-03-26current
Hamilton Sundstrand CorporationTransmission 705117KBoeing P/N 60B00014-24Boeing 747-2001996-03-26current
Hamilton Sundstrand CorporationTransmission 705117GBoeing P/N 60B00014-14Boeing 747-100, 2001996-03-26current
Hamilton Sundstrand CorporationTransmission 705117EBoeing P/N 60B00014-8Boeing 747-1001996-03-26current
Hamilton Sundstrand CorporationTransmission 705117DBoeing P/N 60B00014-7Boeing 747-100, 2001996-03-26current
Hamilton Sundstrand CorporationTransmission 699647CBoeing P/N 10-61223-2Boeing 737-100, 2001996-03-26current
Hamilton Sundstrand CorporationTransmission 729641ALockheed 671999-153Lockheed L-1011-385 Series1996-03-04current
Hamilton Sundstrand CorporationTransmission 707388PLockheed 671999-147Lockheed L-1011-385 Series1996-03-04current
Hamilton Sundstrand CorporationTransmission 729641BLockheed 671999-153Lockheed L-1011-385 Series1996-03-04current
Hamilton Sundstrand CorporationTransmission 729641CLockheed 67199-153Lockheed L-1011-385 Series1996-03-04current
Hamilton Sundstrand CorporationTransmission 707388TLockheed 671999-147Lockheed L-1011-385 Series1996-03-04current
Hamilton Sundstrand CorporationTransmission 707388RLockheed 671999-147Lockheed L-1011-385 Series1996-03-04current
Hamilton Sundstrand CorporationTransmission 707388SLockheed 671999-147Lockheed L-1011-385 Series1996-03-04current
Hamilton Sundstrand CorporationTransmission 707388NLockheed 671999-147Lockheed L-1011-385 Series1996-03-04current
Hamilton Sundstrand CorporationTransmission 755471EBombardier 755471EBombardier, Inc. CL600-2B191995-12-06current
Hamilton Sundstrand CorporationTransmission 731633A Dwg 731633 Rev. P...Bombardier P/N 731633ABombardier, Inc. CL600-1A11, CL600-2A12, CL600-2B161994-03-06current
Hamilton Sundstrand CorporationTransmission 755471C Dwg 755471 Rev....Bombardier P/N 755471CBombardier, Inc. CL600-2B191994-03-06current
Pacific Sky Supply INCTransmission - Mechanical 520432PHamilton Standard 520432Hamilton Standard Division 54H60-91 and -1171993-11-09current
Hamilton Sundstrand CorporationTransmission 736676Boeing 60B40116-21Boeing 747-200, -3001991-09-15current
Hamilton Sundstrand CorporationTransmission 731633, Dwg 731633 Rev....731633Bombardier, Inc. CL-600-1A11, -2A12, -2B161987-10-18current
Hamilton Sundstrand CorporationTransmission 696233B, Dwg. 696233 Rev....P/N 696233BMcDonnell Douglas DC-9-811986-03-02current
Hamilton Sundstrand CorporationTransmission 729490-Boeing 747 Series1982-06-21current
Hamilton Sundstrand CorporationTransmission, Outline 695379F-Fokker F281981-12-02current
Hamilton Sundstrand CorporationTransmission 716066-Boeing 747 Aircraft (G.E. cf6 Engine)1977-01-13current

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.