Service difficulty report · Frame · Raythn 400ARAYTHEON

Difficulty date
August 22, 2017
Submitted
September 7, 2017
Operation
Air carrier
Aircraft
N499TM
Make and model
Raythn 400ARAYTHEON
Aircraft serial
RK602
Aircraft time
4,753 hours, 3,508 cycles
Part
Frame
Condition
Cracked
Location
Bs 329
Part time
4,753 hours, 3,508 cycles
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

CRACKS NOTED AROUND TWO FASTENER HOLES THAT ATTACH THE PYLON CLIP TO FRAME 43 AT BS 329.82 RH AT THE AFT FACE OF THE FRAME. PERFORMED LIQUID PENETRANT INSPECTION AND FOUND SEVEN CRACKS TOTAL. THE UPPER HOLE HAS FOUR CRACK INDICATIONS NOTED AS LONG AS 0.750" FROM THE OPEN HOLE. THE LOWER HOLE HAS THREE CRACK INDICATIONS AS LONG AS 0.250" FROM THE OPEN HOLE.