SDR UPS08851642

Service difficulty report · Cusp Web · Doug DC871F

Difficulty date: January 7, 2008
Submitted: February 11, 2008
Operation: Air carrier
Aircraft: N702UP
Make and model: Doug DC871F
Aircraft serial: 45902
Aircraft time: 68,725 hours, 26,121 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Cusp Web
Part number: 9755804
Condition: Cracked
Location: Fs 275 L21r
Stage of operation: IN
How discovered: 9
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

INSPECTION TYPE:C2 MAIN CABIN, L21R HAS HEAVY INTERGRANULAR CORROSION AND A 4 INCH CRACK INSIDE TORQUE BOX STA 275. REPAIRED L21R CUSP CRACK AND CORROSION AT STA 210, 235 AND 275 IAW SRM 53-02-00 FIG 002, SRM 53-02-05 FIG 15 AND DWG 9755808.

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