- Difficulty date
- January 17, 2025
- Submitted
- January 27, 2025
- Operation
- Air carrier
- Make and model
- Boeing 73783N
- Aircraft serial
- 32577
- Aircraft time
- 58,247 hours, 41,739 cycles
- Part
- Regulator
- Condition
- Faulted
- Location
- Zone 100
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- B
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK BLEED TRIP OFF ILLUMINATED DESCENDING FROM FLT390 TO FL380. PERFORMED BLEED AIR SYS LEAK CHECK REF AMM 36-11-00 BLEED AIR REG FAILED. R/R BLEED AIR REGULATOR ASSY IAW AMM 36-11-3 LEAK AND OPS CHECK REQUIRED. DEFECT 785437: R/R RH PRE-COOLER VALVE IAW AMM 36-12-2 OPS CHECK GOOD. THIS CLEARS MEL 363-2 MDDR#129206