SDR ASMF20130523007

Service difficulty report · Unknown · Boeing 737752

Difficulty date: May 1, 2013
Submitted: May 23, 2013
Operation: Air carrier
Aircraft: N842AM
Make and model: Boeing 737752
Aircraft serial: 32842
Aircraft time: 25,231 hours, 13,304 cycles
Engine: Cfmint CFM567B22
System (JASC): 7200 · Engine (Turbine/Turboprop)
Part: Unknown
Condition: Vibration
Location: Lt Engine
Stage of operation: CL
How discovered: O
Nature of condition: E
Precautionary procedure: O

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

What was found

CAPTAIN REPORTED THAT DURING CLIMB, THE LT ENGINE VIBRATION REACHED 2.8 UNITS AND DURING CRUISE THE VIBRATION WAS STABILIZED IN 2.3 UNITS. AIRCRAFT WAS SENT TO THE HANGAR AND MX PERSONNEL PERFORMED A TRIM BALANCE IAW AMM 71-00-00, TASK 71-00-00-700-847-G01, A NLG STRUT SERVICE IAW AMM 12-15-41, TASK 610-802 AND LUBRICATION OF THE FAN ROTOR BLADE OF THE LT ENGINE IAW AMM 72-21-02 AND VIBRATION TEST NR 7 WAS PERFORMED IAW AMM 72-00-00, BEING WITHIN LIMITS.