SDR FDEA201109093789

Service difficulty report · Longeron · Doug MD11F

Difficulty date: September 9, 2011
Submitted: September 9, 2011
Operation: Air carrier
Aircraft: N643FE
Make and model: Doug MD11F
Aircraft serial: 48486
Aircraft time: 48,609 hours, 9,839 cycles
System (JASC): 5313 · Fuselage Main, Longeron/Stringer
Part: Longeron
Part number: A6A7115U516
Condition: Corroded
Location: Zone 100
Stage of operation: IN
How discovered: V
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

CENTER ACCESSORY COMPARTMENT, BETWEEN STA 6-90 TO STA 1159, LONGERON 47 RT, FOUND CORRODED. CORRSION REMOVED IAW SRM 51-21-01, REV 47. ORIGINAL MATERIAL THICKNESS = 0.090"; MATERIAL REMOVED = 0.049 INCH, FOUND EXCEEDED LIMIT IAW SRM 53-00-00, REV 47, FIG 205. LONGERON REMOVED AND NEW LONGERON INSTALLED IAW SRM 51-31-01, REV 47. REPAIR CLASSIFIED AS MAJOR IAW GMM 6-2-100, REV 113.

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