What was found
TEST FLIGHT- RAT WOULD NOT DEPLOY WITH BOTH SPEED CAD C/B PULLED. REMOVED AND REPLACED LEFT AND RIGHT ENG SPEED CARDS IAW AMM 77-12-03-4, PERFORMED RAT AUTO DROP TEST IAW AMM 29-21-00-5, TEST PASSED.
- Difficulty date
- August 23, 2021
- Submitted
- August 26, 2021
- Operation
- Air carrier
- Aircraft
- N921FD
- Make and model
- Boeing 75728A
- Aircraft serial
- 24924
- Aircraft time
- 77,160 hours, 27,116 cycles
- System (JASC)
- 2900 · Hydraulic Power System
- Part
- Ram Air Turb
- Part number
- A5903420
- Part serial
- 254191
- Condition
- Failed
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.