SDR UIEA2015120900712

Service difficulty report · Skin · Boeing 747409

Difficulty date: December 6, 2015
Submitted: December 9, 2015
Operation: Air carrier
Aircraft: N780BA
Make and model: Boeing 747409
Aircraft serial: 24310
Aircraft time: 76,891 hours, 14,922 cycles
System (JASC): 5512 · Horizontal Stabilizer, Plate/Skin
Part: Skin
Condition: Corroded
Location: Lt Horiz Stab
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

CORROSION SKIN, AT LT HORIZONTAL STAB LOWER EXTERNAL SKIN, REAR SPAR STAB STATION 230. REMOVE DAMAGE & MEASURE REWORK AREA LENGTH = 1.4" & WIDTH = 1" & DEPTH=0.008" IS WITH ALLOWABLE LIMITS IAW SRM 55-10-01-1A-1 ALLOWABLE DAMAGE REV 32 & FREE OF CORROSION DETAIL DATA, REF TO JOB CARD ATTACHING SHEET NR 0069642. PERFORM REWORKED AREA PROTECTIVE TREATMENT IAW SRM 51-20-01 REV 32 & 3. CONDITION CHECK NORMAL & JOB COMPLETED.