What was found
DURING CLIMB AND DESCENT THE LT PNEUMATIC DUCT PRESSURE SURGES 25PSI TO 40 PSI REPEATEDLY. R & R AIR SUPPLY PRESSURE REGULATING AND SHUTOFF VALVE, PRSOV, IAW AMM 36-11-09.
- Difficulty date
- February 8, 2014
- Submitted
- February 10, 2014
- Operation
- Air carrier
- Aircraft
- N590HA
- Make and model
- Boeing 7673CB
- Aircraft serial
- 33467
- Aircraft time
- 44,210 hours, 7,928 cycles
- System (JASC)
- 3410 · Flight Environment Data
- Part
- Valve
- Part number
- 77328810
- Part serial
- 971036
- Condition
- Failed
- Location
- Pneumatic Sys
- Part time
- 22,780 hours, 3,852 cycles
- Stage of operation
- DE
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.