What was found
NR 3 ENGINE HIGH STAGE VALVE WILL NOT OPEN AT ALTITUDE WITH THRUST LEVER CLOSED. REPLACED CLAMP ON HIGH STAGE VALVE, OPERATIONAL CHECK & LEAK CHECK OK PER MM 36-11-00.
- Difficulty date
- August 8, 2004
- Submitted
- August 10, 2004
- Operation
- Air carrier
- Aircraft
- N921FT
- Make and model
- Boeing 747283B
- Aircraft serial
- 21575
- Aircraft time
- 62,846 hours, 14,070 cycles
- Engine
- Pwa JT9D70A
- Engine time
- 46,206 hours, 10,317 cycles
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Clamp
- Part number
- NH420021010
- Condition
- Damaged
- Location
- Hi Stage Valve
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.