What was found
AIR PRESSURE FROM APU NOT STABLE DURING ENGINE START.UNABLE TO GET STABILIZED N2(<P>TRANSFERRED TO MDDR 106753 IAW DDG 49-11-01A, CAT C DUE 11FEB19 .</P><P>R/R SURGE CONTROL VALVE PER AMM 49-53-01. OPS CK GOOD.
- Difficulty date
- February 1, 2019
- Submitted
- February 6, 2019
- Operation
- Air carrier
- Aircraft
- N1439A
- Make and model
- Boeing 76733A
- Aircraft serial
- 28495
- Aircraft time
- 68,809 hours, 15,968 cycles
- System (JASC)
- 4920 · APU Core Engine
- Part
- Control Valve
- Part number
- 97980612
- Part serial
- 1933C
- Condition
- Malfunctioned
- Location
- Apu Surge
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- D
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.