What was found
DIVERSION, AT CRUISE FL250, GOT CABIN ALT WARNING. NO ASSOCIATED LIGHTS OTHER THAN CABIN ALT WARNING. SELECTED MAN PRESSURIZATION AND CLOSE OUTFLOW VALVE. R&R NR 2 ENGINE HIGH STAGE PRESSURE REGULATOR PER AMM.
- Difficulty date
- March 16, 2019
- Submitted
- March 18, 2019
- Operation
- Air carrier
- Aircraft
- N7877H
- Make and model
- Boeing 7377Q8
- Aircraft serial
- 29359
- Aircraft time
- 42,142 hours, 21,978 cycles
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Regulator
- Part number
- 1074847
- Part serial
- 10906
- Condition
- Failed
- Location
- Bleed Air Sys
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.