What was found
NR 1 ENG HUNG START AT 28-29 PERCENT N2. FOUND PYLON VALVE STUCK OPEN, CYCLED SAME ENG START NORMAL.
- Difficulty date
- December 11, 2003
- Submitted
- December 15, 2003
- Operation
- Air carrier
- Aircraft
- N524UP
- Make and model
- Boeing 747200
- Aircraft serial
- 21446
- Aircraft time
- 68,434 hours, 18,183 cycles
- Engine time
- 69,053 hours, 18,681 cycles
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Valve
- Condition
- Stuck
- Location
- Nr 1 Engine
- Stage of operation
- TX
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.