Service difficulty report · Stringer · Boeing 727225

Difficulty date
December 13, 2007
Submitted
February 17, 2008
Operation
Air carrier
Aircraft
N742DH
Make and model
Boeing 727225
Aircraft serial
21290
Aircraft time
60,719 hours, 38,406 cycles
Part
Stringer
Condition
Corroded
Location
Bs 990-970
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

SURFACE CORROSION, AFT PIT BETWEEN BS 990 TO BS 970 STRINGER 29L. REMOVED CORROSION AFT PIT BETWEEN BS 990 TO BS 970 STRINGER 29L IAW B-727 SRM 51-10-6. FOUND CORROSION OUT OF LIMITS IAW B-727 SRM 53-10-1 FIGURE 1 AND 53-10-2 FIGURE 5. FABRICATED REPAIR PARTS IAW ED NR EDAE59-3 REV A. TREATED AND PRIMED IAW B-727 SRM 51-10-2. INSTALLED REPAIR IAW B-727 SRM 51-30-2 AND ED NR EDAE59-3 REV A. REPAIR PARTS, FILLER FROM 7075-T6, 0.032" BY 24" BY 1" PO NR 9005482, DOUBLER FROM 7075-0 0.050" BY 22" BY 7.5" PO NR 722966 AND TRIPLER FROM 7075-T6 0.050" BY 22: BY 1.25" PO NR 9004940.