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SDR ASAA2020010231754

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Service difficulty report · Seal · Boeing 737990ER

FAA SDR system

Difficulty date
December 30, 2019
Submitted
January 3, 2020
Operation
Air carrier
Aircraft
N407AS
Make and model
Boeing 737990ER
Aircraft serial
41731
Aircraft time
28,438 hours, 9,025 cycles
Engine
Cfmint CFM567B27E
System (JASC)
7260 · Turbine Engine Accessory Drive
Part
Seal
Part number
3051157090
Condition
Leaking
Location
Nr 1 Engine
Stage of operation
CL
How discovered
O
Nature of condition
O
Precautionary procedure
A

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

What was found

DURING T/O ROTATION AND CLIMB OUT, #1 ENG OIL QTY INDICATED 3 W/ REVERSE VIDEO DISPLAYED. ENG OIL QTY ROSE TO 7 AT CRUISE. ALL OTHER ENG PARAMETERS NORMAL. OIL QTY THEN DECREASED TO 3 AND REV VIDEO DISPLAYED AGAIN, LANDED KLAS. GROUNDED - YES. DIVERSION TIME 11 MINUTES - REF TSR 704580 REMOVED AND REPLACED SEALOL SEAL ON #1 ENG N2 DRIVE PAD REF AMM 72-60-00-000-802-F00 AND AMM 72-60-400-802-F00 LEAK CHECK AND PART POWER CHECK GOOD REF AMM 71-00-00-700-823-F00.