What was found
WITH AUTO PILOT "A" OR "B" ENGAGED, ALTITUDE ALERT HORN & LIGHT CONTINUALLY CHIME IN LEVEL FLIGHT AFTER CLIMB TO FL 34.0 (WAS O.K. AT FL 32.0 & FL 33.0) REMOVED & REPLACED ALT ALERT WARNING COMPUTER IAW MM 31-16-00. OPS CHK GOOD.
- Difficulty date
- March 7, 2002
- Submitted
- March 11, 2002
- Operation
- Air carrier
- Aircraft
- N853FT
- Make and model
- Boeing 747122
- Aircraft serial
- 19753
- Aircraft time
- 84,428 hours, 21,693 cycles
- System (JASC)
- 3416 · Altimeter, Barometric/Encoder
- Part
- Computer
- Part number
- 9650184601
- Part serial
- 359
- Condition
- Faulty
- Location
- E & E Comp.
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- J, N
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.