What was found
WHILE PERFORMING HMG OPS CHECK, HMG DID NOT DEVELOP A HIGH ENOUGH FREQUENCY, WORKING AT 391 CYCLES. SHOULD BE A MIN OF 395 CYCLES. (<P>REPLACED HMG CONTROL GENERATOR MOTOR IAW AMM 24-25-02. OPS CHECK NORMAL, 399 FREQUENCY. </P>)
- Difficulty date
- February 7, 2019
- Submitted
- February 8, 2019
- Operation
- Air carrier
- Aircraft
- N1399A
- Make and model
- Boeing 767306
- Aircraft serial
- 27959
- Aircraft time
- 88,198 hours, 16,618 cycles
- System (JASC)
- 2421 · AC Generator-Alternator
- Part
- Generator
- Part number
- 21428
- Part serial
- N1030
- Condition
- No Test
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.