What was found
RETURN TO BLOCKS DUE TO "BLD 1 OVHT/PRV" EICAS MESSAGE. FINDING THAT THE INCORRECT PRV VALVE WAS DELIVERED, MAINTENANCE SWAPPED THE NR 3 HPSOV WITH NR 1 PRV AND THEN DEFERRED THE NR 3 HPSOV, PER MM 36-11-00.
- Difficulty date
- March 26, 2008
- Submitted
- April 4, 2008
- Operation
- Air carrier
- Aircraft
- N452PA
- Make and model
- Boeing 74746NF
- Aircraft serial
- 30810
- Aircraft time
- 31,680 hours, 5,338 cycles
- System (JASC)
- 3600 · Pneumatic System
- Part
- Relief Valve
- Part number
- 80217010
- Part serial
- 9910064
- Condition
- Wrong Part
- 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.