SDR CALA2014022400226

Service difficulty report · Engine · Boeing 737724

Difficulty date: February 22, 2014
Submitted: February 24, 2014
Operation: Air carrier
Aircraft: N13750
Make and model: Boeing 737724
Aircraft serial: 28941
Aircraft time: 50,009 hours, 16,695 cycles
Engine: Ge CFM567B24
System (JASC): 7200 · Engine (Turbine/Turboprop)
Part: Engine
Part number: 9324M60G01
Condition: Vibration
Location: Nr 1
Stage of operation: CR
How discovered: O
Nature of condition: R, E
Precautionary procedure: A

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

What was found

NR 1 ENG ROLL BACK INFLIGHT AT FL 400 DROPPED TO 67% N!, THEN RECOVERED, AS WE CONTINUED VIBRATION GOT GRADUALLY WORSE & VIOLENT ON FINAL, LANDED WITH NR 2 ENG POWER & NR 1 ENG AT IDLE VIBRATING. R & R NR 1 ENG IAW WORK CARD 29-7100-1-0900 & 29-7100-1-4900. PERFORMED TEST 9 ENG RUN IAW AMM 71-00-0 0-700-816-F00, ENG RUN & LEAK TEST GOOD. ROTABLE PARTS CHANGE WAS INDICATED TT 1573689, SN OFF 04798, IPC IAW 71-00-00-04.