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DE HAVILLAND DHC 2 Beaver SDR # 20030327009
Amphibious Nose Gear Separated
During inspection when the aircraft was jacked, the amphibious nose gear separated from the float. The inner casing assembly, P/N C2UF1781, had failed at the welded seam.
HAWKER SIDDLEY HS 748 SDR # 20040415004
Elevator Control Arm Cracked
On pre-flight inspection when checking the elevator play, excessive movement revealed the elevator control bell crank primary attach lug, P/N 298/G3096, was cracked through, and that the rod end was being retained by an oversized secondary lug.
This resulted in a decrease of travel on starboard elevator and substantially increased free-play. The restricting bracket, introduced by mandatory modification 2449/SB27-33, retained the elevator actuator rod. There is no recent report of the aircraft experiencing any gust loads to the elevators.
This defect was detected by a thorough pre-flight inspection.

 

MOONEY M20C SDR #20040409001
Main Gear Collapsed
The right main gear of a Mooney M20C aircraft, collapsed on landing roll-out. Initial investigation discovered that the main gear actuating tube inside the belly, P/N 915019000, was bent. It is unknown if this tube was bent before the incident or as result of main gear collapse.
Time Since New (TSN) : 4060 hrs
This incident is currentlyunder investigation by theTransportation SafetyBoard (TSB). Due to thebent landing gear tube,the submitter was unable to determine if the geardownlock rigging waswithin published limits or not.
The submitter also recommends close inspection of actuatingtubes for bending. These tubes are under compression load whenthe gear is at down and locked.
PIPER PA 31 SDR # 20040219006
Left Main Axle Broken
The pilot was taxiing a Piper PA 31 for take-off when the left main axle, P/N 4041304, broke. After hearing vibration and noises, the pilot taxied back and discovered the left main wheel had tilted over and was rubbing on the fork assembly.
Time Since New (TSN): 16094 hrs

 

The submitter added that this aircraft previously landed long and fast on a short dirt runway. In departing the endof the runway, the left main gear struck a pothole and subsequently a prop strike occurred necessitating a prop andengine replacement. The runway incursion may have contributed to this premature failure of the axle.
PIPER PA 42 720 -SDR # 20040427016
Avionics Lost on Final Approach
On final approach, the pilot noticed he had lost primary avionics power and the standby power supply had engaged to provide basic power. An uneventful landing was carried out.
An investigation by maintenance determined that the avionics master switch, P/N 688219, (push to engage, push again to disengage) had malfunctioned and disengaged to the 'off' position. The internal latching mechanism is not visible for inspection. The failed switch was replaced.
Time Since New (TSN): 9124 hrs
　
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本文鏈接地址：加拿大航空服務難度報告 Canadian Aviation Service Difficulty Reports(4)