SDR DALA13048776811

Service difficulty report · Dome Nut · Boeing 757231

Difficulty date: October 1, 2013
Submitted: October 2, 2013
Operation: Air carrier
Aircraft: N705TW
Make and model: Boeing 757231
Aircraft serial: 28479
Aircraft time: 56,422 hours, 15,877 cycles
System (JASC): 5310 · Fuselage Main, Structure
Part: Dome Nut
Condition: Corroded
Location: Antenna
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

AFT CARGO BILGE BS 1500-1520, S27-28R ANTENNA DOME NUT DOUBLER UPPER SURFACE CORRODED 1 EA DOME NUT MISSING (TR019). REMOVED CORROSION FROM DOUBLER (NUT HOLDING PLATE) ORIGINAL, MATERIAL THICKNESS .050" MECHANICALLY MEASURED , MATERIAL LOSS .018", MAX MATERIAL LOSS ALLOWED .007" FOUND TO BE OUT OF LIMITS REF SRM 53-00-01, FIG 101, PAGE 104, FABRICATED REPLACEMENT NUT HOLDING PLATE REF ER/A 518275-14, REV ORIG. ACCOMPLISH PERMANENT REPAIR IAW ER/A 518275-14, REV.