Service difficulty report · Bleed Valve · Boeing 7572B7

Difficulty date
June 4, 2019
Submitted
June 10, 2019
Operation
Air carrier
Aircraft
N938UW
Make and model
Boeing 7572B7
Aircraft serial
27246
Aircraft time
78,105 hours, 27,733 cycles
Engine
Rroyce RB211535E4
Part
Bleed Valve
Part number
32143069
Part serial
P236CAC
Condition
Faulty
Location
Lt Engine
Part time
82,600 hours, 28,655 cycles
Stage of operation
CR
How discovered
V
Nature of condition
J
Precautionary procedure
A

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

What was found

AIRCRAFT WAS GROUNDED: PILOT DECLARED EMERGENCY ON ACCOUNT OF LEFT ENGINE BLEED FAULT INDICATION. FLIGHT LANDED OVERWEIGHT WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED PRSOV IAW AMM 36-11-09, WHILE TROUBLESHOOTING BLEED ISSUE FOUND FWD DUCT OF PRSOV DAMAGED AND LEAKING, REMOVED AND REPLACED FLEX JOINT DUCT ASSEMBLY IAW AMM 36-11-01. NEW JOINT DUCT ASSEMBLY WAS NOT COMPLETE ORDERED NEW PARTS FOR ASSEMBLY AND INSTALLED PRESSURE TAP ASSEMBLY IAW AMM 36-11-01. REMOVED AND REPLACED PNEUMATIC OVERTEMP LIMITING SENSOR IAW AMM 36-11-13-004. PERFORMED IDLE LEAK CHECK- NO LEAKS. PERFORMED TAKE OFF POWER TEST #13, NO FAULTS AT THIS TIME. PERFORMED TAKE OFF POWER WITH BLEEDS ON AND NO FAULTS.

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