SDR ASMF2020090707

Service difficulty report · Engine · Boeing 737852

Difficulty date: July 12, 2020
Submitted: September 7, 2020
Operation: Air carrier
Aircraft: N957AM
Make and model: Boeing 737852
Aircraft serial: 39957
Aircraft time: 21,419 hours, 7,825 cycles
Engine: Cfmint CFM567B27E
System (JASC): 7200 · Engine (Turbine/Turboprop)
Part: Engine
Condition: Failed
Location: Right
Part time: 21,419 hours, 7,825 cycles
Stage of operation: IN
How discovered: 9
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

IAW CNR 20200615014 OF REMOTE DIAGNOSTIC GE/CFM SYSTEM, THE RIGHT ENGINE INCREASE OF VIBRATION IN CRUISE. IF NECESSARY PERFORM THE RE-LOCATION OF THE FAN BLADES ACCORDING TO THE PROCEDURE WITH THE COMPUTED METHOD MAPPING PROCEDURE, IAW AMM TASK 72-21-02-900-801-F00 AND IF REQUIRED PERFORM THE TRIM BALANCE IAW AMM 71-00-00-750-802. THE TRIM BALANCE WAS PERFORMED IAW AMM TASK 71-00-00-700-814-F00 AND VIBRATION SURVEY TEST NUMBER 7 WAS PERFORMED IAW AMM 72-00-00 WITH VIBRATION OF 0.4 UNITS TO 94.6% N1, TESTED CORRECT.