SDR TWAA0008709

Service difficulty report · Intercostal · Doug DC932

Difficulty date: May 24, 2000
Submitted: June 5, 2000
Operation: Air carrier
Aircraft: N921L
Make and model: Doug DC932
Aircraft serial: 47107
Aircraft time: 80,344 hours, 86,616 cycles
System (JASC): 5400 · Nacelle/Pylon Structure
Part: Intercostal
Condition: Cracked
Location: Nr 2 Pylon
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

DURING OP 16 MAINT CHECK, NUMBER 2 PYLON INTERCOSTAL WAS CRACKED OFF TOP 6 INCHES FROM FUSELAGE, BOTTOM AFT OF PYLON INTERIOR, AFT END. REMOVED CRACKED INTERCOSTAL. FABRICATED REPAIR PER SRM 53-01 PAGE 8. HEAT TREATED REPAIR DOUBLER 2024, 0.050 TO 2024-T3 PER 51-10-2A. MATERIAL SUBSTITUTION PER 51-60-0. SEALED PER SRM 51-20-00.

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