SDR QXEA2012071200654

Service difficulty report · Skin · Bombdr DHC8401

Difficulty date: July 12, 2012
Submitted: July 16, 2012
Operation: Air carrier
Aircraft: N408QX
Make and model: Bombdr DHC8401
Aircraft serial: 4050
Aircraft time: 26,923 hours, 27,843 cycles
Engine: Pwc PW150A
System (JASC): 5730 · Wing, Plate/Skin
Part: Skin
Condition: Corroded
Location: Rt Wing
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

RT WING PANEL LANDING FOR PANEL 623AT HAS PITTING AROUND MULTIPLE HOLES. BLENDED CORROSION IAW RD 8/4-57-441. MINIMUM REMAINING THICKNESS .168", CONFIRMED AFFECTED AREA CRACK FREE REF NTM 51-00-04-910-801 PT 1 AND 51-00-06-910-801 PT 1. MATERIAL LOSS FOUND TO BE OUT OF LIMITS IAW RD 8/4-57-441. MATERIAL LOSS FOUND WITHIN LIMITS IAW RD 8/4-57-1867 RECEIVED FROM ENGINEERING. APPLIED FASTWELD, ALODINED, AND PRIMED IAW RD 8/4-57-1867. COMPLIED WITH TASK CARD RD 8/4-57-1867.