SDR DHL2006804519

Service difficulty report · Stiffener · Doug DC873F

Difficulty date: January 29, 2006
Submitted: February 14, 2006
Operation: Air carrier
Aircraft: N804DH
Make and model: Doug DC873F
Aircraft serial: 46124
Aircraft time: 83,105 hours, 30,019 cycles
System (JASC): 5510 · Horizontal Stabilizer Structure
Part: Stiffener
Condition: Cracked
Location: Horizontal Stab
Part time: 83,105 hours, 30,019 cycles
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

RIGHT HORIZONTAL STABILIZER STIFFENER CRACKED 1 INCH XFS 47.500. REMOVED CRACKED STIFFENER IAW SRM 51-1-21, SRM 51-1-20D. FABRICATED STIFFENER (AL7075"0" 0.063") IAW SRM 55-3-0 PG 8. HEAT TREATED FROM 7075"0" TO 7075T6 IAW SRM 51-1-1 PG 1-13-17. CLEANED, TREATED AND PRIMED AREA AND NEW STIFFENER IAW SRM 51-1-8B. INSTALLED NEW STIFFENER IAW SRM 51-1-21, SRM 51-1-20D, SRM 51-3-1 (TORQUE).

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