SDR ASAA2017073021496

Service difficulty report · Seal · Boeing 737890

Difficulty date: July 30, 2017
Submitted: August 3, 2017
Operation: Air carrier
Aircraft: N590AS
Make and model: Boeing 737890
Aircraft serial: 35687
Aircraft time: 36,524 hours, 11,025 cycles
Engine: Cfmint CFM567B27B3
System (JASC): 7220 · Turbine Engine Air Inlet Section
Part: Seal
Condition: Missing
Location: Nr 1 Engine
Stage of operation: IN
How discovered: V
Nature of condition: O
Precautionary procedure: K

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

What was found

WHILE PERFORMING FAN BLADE LUBRICATION ON THE NR 1 ENGINE, STEP 33 FOUND PLATFORM ELASTOMER SEAL MISSING. TOTAL LENGTH 41.00 INCHES. ACFT GROUNDED. REMOVED AND REPLACED IAW AMM 72-21-02-00-000-801-F00. ACCOMPLISHED TEST 7 VIBRATION SURVEY IAW AMM 71-00-00-700-814-F00 VIBRATION LEVELS WITHIN OPERATING LIMITS IAW AMM 71-00-00-800-806-F00.