Service difficulty report · Seal · Boeing 737990ER

Difficulty date
July 1, 2023
Submitted
July 12, 2023
Operation
Air carrier
Aircraft
N433AS
Make and model
Boeing 737990ER
Aircraft serial
41704
Aircraft time
35,950 hours, 11,355 cycles
Part
Seal
Part number
3051157090
Condition
Leaking
Location
#2 Engine
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 ENGINE OIL TREND DATA STIL SHOWS OIL CONSUMPTION TO GREATER THAN EXPECTED. (#PRI2/ETOPS)ENGINE POWER RUN REQUIRED. GROUNDED - YES. (RESOLVED ON W/O: 1960444 TASKCARD: N/R-00001 ) C/W TSR STEPS 1 THRU 5 AND FOUD DRIVE PAD TO HAVE OIL SEEPING. REMOVED AND REPLACED DRIVE PAD PACKING AND REQUIRES LEAK CHECK. 39565 ASA86 AGB HAD LESS THAN 2 QTS WHEN DRAINED ALLOWING STEPS 6,7,8, TO BE SKIPPED. AGB DRAIN PLUG REQUIRES LEAK CHECK. C/W TSR STEP 9 AND FOUND EVIDENCE OF OIL COMING FROM THE IDG SRAIN. C/W TSR STEP 10 CLEANED ALL EVIDENCE OF OIL UNDER THE ENG AND INSTALLED 8 EA PLASTIC BAGS ON OIL DRAIN LINE FOR THE HIGH POWER RUN UP. PART POWER LEAK CHECK REQUIRED. 39565 07-11-23. REF LOGPAGE 60722256 FOR 8 RA OIL BAGS INSTALLED. PERFORMED LEAK CHECK OF #2 ENG DRIVE PAD COVER REF AMM 72-63-01, LEAK CHECK GOOD PG 43305 07/11/2023 ASA86. PERFORMED LEAK CHECK OF AGB DRAIN PLUG, LEAK CHECK GOOD. AFTER PART POWER RUN FOUND OIL IN IDG DRAIN BAG. REMOVED AND REPLACED IDG SEALOL SEAL REF AMM 72-60-00, OPS CHECK AND LEAK CHECK GOOD. ALL TSR STEPS COMPLETED AND ALL BAGS REMOVED. SEAMC RON NOTIFIED.