Service difficulty report · Valve · Boeing 737990ER

Difficulty date
September 2, 2019
Submitted
September 4, 2019
Operation
Air carrier
Aircraft
N457AS
Make and model
Boeing 737990ER
Aircraft serial
36355
Aircraft time
22,049 hours, 7,198 cycles
Part
Valve
Part number
1821M59P06
Part serial
GRTN8469
Condition
Leaking
Location
Nr 2 Engine
Part time
22,048 hours, 7,197 cycles
Stage of operation
IN
How discovered
O
Nature of condition
K
Precautionary procedure
K

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

What was found

#2 ENG HAS A LEAK COMING OUT OF THE DRAINS. GROUNDED - YES. FOUND #2 ENG HPTACC VALVE DRAIN LEAKING ONE DROP EVERY 4 SECONDS. REMOVED #2 ENG HPTACC REF AMM 75-21-01-000-801-F00. INSTALL #2 ENGINE HPTACC VALVE REF AMM 75-21-01-400-801-F00. STEPS 3. A-G (4) (A); (5) (A) - (B), STEPS G (7) (A)- (E). FINISH FINAL INSTALLED OF #2 ENG HPTACC REF AMM 75-21-01-400-801-F00, STEPS G (6) (4) (5) THRU H. & I. TEST 3A & 12 PASSED. NO FAULTS OF LK'S NOTED.