Service difficulty report · Pilot Valve · Boeing 757230

Difficulty date
May 2, 2025
Submitted
May 7, 2025
Operation
Air carrier
Aircraft
N688SL
Make and model
Boeing 757230
Aircraft serial
25140
Aircraft time
106,028 hours, 27,209 cycles
Engine
Pwa PW2037
Engine time
74,763 hours, 24,104 cycles
Part
Pilot Valve
Part number
33990047
Part serial
1002C
Condition
Faulted
Location
Lt Engine
Stage of operation
IN
How discovered
V
Nature of condition
J
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

MX INSPECTION. ESI - PNEUMATIC HEALTH CHECK REQUIRED. HIGH STAGE PILOT FAILED PNEUMATIC SYSTEM DYNAMIC TEST. R & R HIGH STAGE PILOT PER AMM.