Service difficulty report · Engine · Boeing 737924ER

Difficulty date
March 15, 2019
Submitted
March 15, 2019
Operation
Air carrier
Aircraft
N38443
Make and model
Boeing 737924ER
Aircraft serial
31655
Aircraft time
27,703 hours, 9,642 cycles
Engine
Cfmint CFM567B273F
Part
Engine
Part number
CFM567B273F
Condition
Vibration
Location
Nr 1
Stage of operation
AP
How discovered
O
Nature of condition
E
Precautionary procedure
B, E

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

What was found

LOUD THUMP AND HEAVY VIBRATION IN CRUISE JUST AT TOD. PLZ HAVE TECH MEET US AT GATE. TOMC ADDED ADDITIONAL INFO FROM FLT CREW. AFTER INITIAL REPORT ANY POWER SETTING ABOVE 60% N1 ON NR 1 ENGINE PRODUCED HEAVY VIBRATION. ENG WAS KEPT BELOW THAT SETTING AND ON APPROACH AT FL012 THE LOP LIGHT ILLUMINATED AND ENG SHUT ITSELF DOWN. DUE TO PAX REPORT OF FIRE BOTH ENG/APU BOTTLES WERE DISCHARGED. UPDATED SDR SELECTION. SEE ELB L/P 9130835 FOR CORRECTIVE ACTION.