Service difficulty report · Gear · Hughes 369D

Difficulty date
August 5, 2020
Submitted
August 5, 2020
Operation
General aviation
Aircraft
N405AT
Make and model
Hughes 369D
Aircraft serial
500717D
Aircraft time
18,159 hours
Part
Gear
Part number
369D25434
Part serial
53041950
Condition
Sheared
Location
T/R Transmission
Part time
1,056 hours
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

TAIL ROTOR TRANSMISSION P/N 369D25400 SERIAL NUMBER 1539 WAS RECEIVED FOR UNIT MAKING METAL. UPON INSPECTION AND DISASSEMBLY IT WAS NOTED THAT THE 369D25434 INPUT GEAR SERIAL NUMBER 5304-1950 WAS SHEARED AT THE LOCATION OF THE ROLL PIN INSTALLATION POINT ON THE 369D25434 GEAR. THIS GEAR IS A TWO PIECE GEAR SHAFT CONSIST OF 369D25433 INNER SHAFT C/T THE 369D25432 GEAR. PART CAN BE FOUND IN THE CSP-COM-5 IPC SECTION 63-25-10 FIGURE 1001 PAGE 1003. ITEM 61.