SDR DHL9771207D

Service difficulty report · S-Duct · Boeing 72729

Difficulty date: February 19, 1997
Submitted: March 26, 2000
Operation: Air carrier
Aircraft: N712DH
Make and model: Boeing 72729
Aircraft serial: 19401
System (JASC): 5400 · Nacelle/Pylon Structure
Part: S-Duct
Condition: Corroded
Location: Nr 2 Engine
Stage of operation: IN
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

AT D-CHECK, S-DUCT HAS CORROSION BULGE AND CRACKED SKIN IN INTERIOR JUST AFT OF PRODUCTION BREAK. CUT OUT AREA OF S-DUCT, 16 BY 6.75 AND PLATE FROM PRODUCTION JOINT 8.5. REPAIRED DAMAGED AREA AT 6 O' CLOCK PER SRM 54-10-3. DOUBLERS 23 BY 10.5, FILLER 16 BY 6.75. SPLICE PLATE 8.5 BY 3 AND SPLICE 4 BY 3.

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