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Parts · Flight controls

Flex Drive

3 failure reports named the flex drive in the last ten years, 74 since 1995, most often on the Mcdonnell Douglas MD-11; the condition most often found was "failed". 30 FAA approvals let 2 companies make a replacement flex drive, Rosemount Aerospace INC holding the most (24). The reports call it "flex drive", "flex drive cable", "flex drive shaft".

Reports by year

0481216199520002008201322026
Reports by year, as a table
reports
19951
19962
19971
19982
19991
20001
20032
20054
20063
200716
20089
20096
20102
20114
201211
20132
20154
20181
20262

Which system the reports file it under last ten years

Flight controls2Airframe structure1
Reports by system, as a table
reports
Flight controls2
Airframe structure1

Models most often reporting it last ten years

Mcdonnell Douglas MD-111
Models most reported, as a table
reports
Mcdonnell Douglas MD-111

How it failed the condition found, last ten years

failed2broken1
Conditions found, as a table
reports
failed2
broken1

Approved replacement parts 30 parts manufacturer approvals

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

Rosemount Aerospace INC 24Honeywell International INC. 6

For these models most: Mitsubishi MU-2 (3), Sikorsky S-61 (2), Dornier DO28 (2), Dehavilland DHC-6 (2), Beechcraft 400 Beechjet (2), Sikorsky S-76 (1), Sikorsky Aircraft Corp S-92 (1), Dehavilland DHC-7 (1), Construcciones Aeronauticas Sa CN-235 (1).

MakerPartReplacesFitsGrantedStatus
Honeywell International INC.Flex Drive 121734-3L922536Rolls-Royce Corporation RB211-524D4-19, RB211-524D4-B-19,...2023-03-23current
Honeywell International INC.Flex Drive 121734-4L922546Rolls-Royce Corporation RB211-524D4-19, RB211-524D4-B-19,...2023-03-23current
Honeywell International INC.Flex Drive 121734-2L922535Rolls-Royce Corporation RB211-524D4-19, RB211-524D4-B-19,...2023-03-23current
Honeywell International INC.Flex Drive 121728-1L922507Rolls-Royce Corporation RB211-22B-02, RB211-524B-02, RB211-524B3-022023-03-21current
Honeywell International INC.Flex Drive 121388-2121388-2Rolls-Royce Corporation RB211-22B-02, RB211-524B-02, RB211-524B3-022023-03-21current
Honeywell International INC.Flex Drive 121196-3121196-3Rolls-Royce Corporation RB211-22B-02, RB211-524B-02, RB211-524B3-022023-03-21current
Rosemount Aerospace INCFlex Drive Assy Standard 2317M-2-682317M2-68Airbus Helicopters... MBB-BK 117 A-12015-02-19current
Rosemount Aerospace INCFlex Drive Assembly 2317M-14-153592900-01807-110Sikorsky Aircraft S-92A2010-04-26current
Rosemount Aerospace INCFlex Drive Assembly 2317M-2-62317M-2-6Columbia Helicopters, Inc 2342009-06-15current
Rosemount Aerospace INCFlex Drive Assembly, Standard 2317M-2-9CASA AC 875025-00Construcciones CASA) (CN-235, CN-235-1002002-10-16current
Rosemount Aerospace INCFlex Drive Assembly, Standard 2317M-2-24British Aerospace Jetstream 2317M-2-24British Aerospace Jetstream 3101, 32012002-10-16current
Rosemount Aerospace INCFlex Drive Assembly, Standard 2317M-2-38CASA AC 720000-00Construcciones CASA) (C212-CB, -CC, -CD2002-10-16current
Rosemount Aerospace INCFlex Drive Assembly, Standard 2317M-2-10CASA AC 720004-00Construcciones CASA) (C-212-CB, -CC, -CD2002-10-16current
Rosemount Aerospace INCFlex Drive Assembly, Standard 2317M-2-79Sikorsky 76200-01901-102Sikorsky S-76B S-76C1995-09-08current
Rosemount Aerospace INCFlex Drive Assembly Non Magnetic, with Support Spring 2317M-5-6Sikorsky XW20483-1730Sikorsky S-61L, -61N1994-07-20current
Rosemount Aerospace INCFlex Drive Assembly, with Support Spring 2317M-9-3Sikorsky XW25270-4Sikorsky S-61L, -61N1994-07-20current
Rosemount Aerospace INCFlex Drive Assembly Standard 2317M-2-49Rosemount 2317M-2-49Raytheon DH.125-1A, -1A/522, -1A/S-5221993-06-30current
Rosemount Aerospace INCFlex Drive Assembly 2317M-2-7Rosemount 2317M-2-7Raytheon DH.125-1A, -1A/522, -1A/S-5221993-06-30current
Rosemount Aerospace INCFlex Drive Assembly, Standard 2317M-2-56Rosemount 2317M-2-56Mitsubishi MU-2B-26, -26A, -361993-06-03current
Rosemount Aerospace INCFlex Drive Assembly, Standard 2317M-2-51Rosemount 2317M-2-51Mitsubishi MU-2B-26, -26A, -361993-06-03current
Rosemount Aerospace INCFlex Drive Assembly, Standard 2317M-2-80Rosemount 2317M-2-80Mitsubishi MU-2B-26, -26A, -361993-06-03current
Rosemount Aerospace INCFlex Drive Assembly Standard 2317M-2-79Rosemount 2317M-2-79Aerospace Technologies N22B, N22S, N24A1993-03-07current
Rosemount Aerospace INCFlex Drive Assembly Standard 2317M-2-61Rosemount 2317M-2-61Aerospace Technologies N22B, N22S, N24A1993-03-07current
Rosemount Aerospace INCFlex Drive Standard 2317M-2-36Rosemount 2317M-2-36deHavilland DHC-6-100, -200, -3001992-12-16current
Rosemount Aerospace INCFlex Drive Standard 2317M-2-32Rosemount 2317M-2-32deHavilland DHC-6-100, -200, -3001992-12-16current
Rosemount Aerospace INCFlex Drive Assembly 2317M-5-9Rosemount 2317M-5-9BAE Systems Operations) Limited (ATP1992-11-29current
Rosemount Aerospace INCFlex Drive Assembly 2317M-2-77Rosemount 2317M-2-77Bombardier, Inc. CL44D4, CL44J1992-11-08current
Rosemount Aerospace INCFlex drive 2317M-7-3Rosemount 2317M-7-3deHavilland DHC-7-100, DHC-7-1011992-11-08current
Rosemount Aerospace INCFlex Drive Assembly, Standard 2317M-2-8Dornier XW-20067-1225Dornier-Werke Do 28D, Do 28D-11992-01-28current
Rosemount Aerospace INCFlex Drive Assembly, Standard 2317M-2-44Dornier XW-20067-2675Dornier-Werke Do 28D, Do 28D-11992-01-28current

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.