Service difficulty report · Skin · Doug DC873F

Difficulty date
April 21, 2008
Submitted
May 5, 2008
Operation
Air carrier
Aircraft
N807DH
Make and model
Doug DC873F
Aircraft serial
45990
Aircraft time
91,019 hours, 28,448 cycles
Part
Skin
Condition
Corroded
Location
Bs 1500 S30-31l
Part time
91,019 hours, 28,448 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

FUSELAGE EXTERNAL SKIN CORRODED STA 1500.000 L-30L - L-31L (MAJOR REPAIR). PERFORMED MAJOR REPAIR IAW SRM 53-2-1 FIG 7 SHEET 1, 2, 5. REMOVED FASTENERS IAW SRM 51-1-21, SRM 51-1-20D. REMOVED CORROSION IAW SRM 51-1-8 PG 17-18. FOUND OUT OF LIMITS IAW SRM 53-2-0 PG 2P. CUT OUT DAMAGED SECTION AND FABRICATED REPAIR DOUBLER (AL7075T6 0.071") FILLER (AL7075T6 0.063") AND 2 INTERNAL FINGER DOUBLERS (AL7075T6 0.040") IAW SRM 53-2-1 FIG 7 SHEET 1, 2, 5, SRM 53-4-1 FIG17A SHEET 2 ITEM "A". CLEANED, TREATED AND PRIMED AREA AND REPAIR PARTS IAW SRM 51-1-8B. INSTALLED REPAIR PARTS IAW SRM 53-2-1 FIG 7 SHEET 1, 2, 5, SRM 51-1-11, SRM 51-1-21, SRM 51-1-20D, SRM 51-3-1 (TORQUE). THIS IS A CLASS I TYPE REPAIR ( PERMANENT). INITIAL INSP: 4.000 LANDING CYCLES, REPETITIVE: 4.000 LANCING CYCLES, REPLACEMENT: N/A, METHOD: EXT VISUAL, NEXT INSP: 32.448 LANDING CYCLES IAW SRM 53-2-1 FIG 5, TR NR 53-190 DATED 09-20-03.

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