Service difficulty report · Longeron · Doug MD11F

Difficulty date
October 4, 2020
Submitted
October 22, 2020
Operation
Air carrier
Aircraft
N596FE
Make and model
Doug MD11F
Aircraft serial
48554
Aircraft time
89,904 hours, 18,975 cycles
Part
Longeron
Part number
ACA37961
Condition
Cracked
Location
Zone 100
Stage of operation
IN
How discovered
E
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

CRACK INDICATION FOUND PROPAGATED FORWARD AND AFT OF THE LOWER FASTENER HOLE ON THE LONGERON INSIDE THE TRIMMED OUT AREA AT NOSE LANDING GEAR LEFT HAND TRUNNION FITTING, APPROXIMATE STATION 593 DURING HIGH FREQUENCY EDDY CURRENT INSPECTION. NOSE LANDING GEAR LEFT HAND TRUNNION FITTING, CRACKED LONGERON REMOVED FROM STATION 546 TO STATION 595 AND INSTALLED WITH FABRICATED LONGERON, AS PER SRM 51-31-01-OG. LONGERON FABRICATED, AS PER DOUGLAS DRAWING ACA 3796 REVISION A. REPAIR CLASSIFIED AS MAJOR, PER GMM 6-2-100.

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