Service difficulty report · Bolt · Dhav DHC8*

Difficulty date
August 1, 2005
Submitted
September 1, 2005
Operation
General aviation
Make and model
Dhav DHC8*
Aircraft time
80 hours
Engine
Pwa PW123
Propeller
Hamstd 14SF23
Part
Bolt
Part number
54C546349
Condition
Damaged
Location
Sequence Valve
Stage of operation
LD
How discovered
O
Nature of condition
K
Precautionary procedure
O

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

What was found

(CAN) DURING A LANDING, AN AIRCRAFT EXPERIENCED LOSS OF MOST OF NR 2 HYDRAULIC SYSTEM CONTENTS. THE DEFECT WAS TRACED TO FAILURE OF LT DOOR SEQUENCING UNIT PART NR 54C54634-9, WHICH HAD SUFFERED SEVERE HYDRAULIC FORCED DAMAGE THAT 2 OF THE BOLTS SHEARED WITH THE FORCE. THIS UNIT WAS REPLACED AND THE HYDRAULIC SYSTEM SERVICED, FUNCTION FLIGHT CARRIED OUT SYSTEM SATISFACTORY AND AIRCRAFT RELEASED TO SERVICE.