Service difficulty report · Angle · Boeing 727225

Difficulty date
November 23, 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
Angle
Condition
Corroded
Location
Bs 1070 S22l
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

EXFOLIATED CORROSION AFT PIT FRAME BS 1070 JUST ABOVE STRINGER 22L. CUT OUT DAMAGED AREA (DIMENSION 2.25" BY 2.25"). FABRICATED REPAIR ANGLE FROM 7075-0 0.071" PO NR 7247111 (DIMENSION 13" BY 3.5") AND REPAIR FILLER FROM 7075-T6 0.063" PO NR 9005922 (DIMENSION 2.25" BY 2.25") IAW B-727 SRM 53-10-2 FIGURE 5 AND 51-40-3 FIGURE 1. HEAT TREATED REPAIR ANGLE TO T6 IAW FAS ENGINEERING REPORT NR 2-37153-801 REV A. TREATED AND PRIMED PARTS IAW B-727 SRM 51-10-2. INSTALLED REPAIR PART AT AFT PIT FRAME BS 1070 JUST ABOVE STRINGER 22L IAW B-727 SRM 51-40-3 FIGURE 1 AND 51-30-2.