SDR EHSA2019F00173

Service difficulty report · Attach Bolt · Gulstm 690B

Difficulty date: March 25, 2019
Submitted: March 27, 2019
Operation: Air carrier
Aircraft: N690FD
Make and model: Gulstm 690B
Aircraft serial: 11393
Aircraft time: 14,792 hours, 10,171 cycles
System (JASC): 5340 · Fuselage Main, Attach Fittings
Part: Attach Bolt
Condition: Loose
Location: Fuselage
Stage of operation: UK
How discovered: O
Nature of condition: O
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CRACKS WERE FOUND DURING ROUTINE INSPECTION AT STATION 386.82. THIS SECTION IS LOCATED AT THE FORWARD SECTION OF THE ATTACH POINT FOR THE VERTICAL TAIL. UPON FURTHER INSPECTION OF THE REMAINING 8 AIRCRAFT 2 ADDITIONAL AIRCRAFT WERE FOUND TO HAVE MINOR CRACKING. IT APPEARS THE 2 SUPPORT BRACKET ATTACH BOLTS BECAME LOOSE WHICH WAS NOT VISIBLE TO THE EYE. AFTER SOMETIME THE LOOSE HARDWARE LEAD TO CRACKING IN THE FORWARD SECTION OF THE VERTICAL ATTACH POINT.