SDR 2026F00163

Service difficulty report · Power Supply

Difficulty date
July 25, 2026
Submitted
July 25, 2026
Operation
General aviation
Part
Power Supply
Part number
77233800
Part serial
SEEBLOCK4
Condition
None
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

9 UNITS OF EMERGENCY POWER SUPPLY UNIT (EPSU) P/N 772-338-00 WERE CERTIFIED FOR RELEASE TO SERVICE WITHOUT THE PART NUMBER BEING IN THE CAPABILITY LIST. TO INCLUDE THE PART NUMBER IN THE CAPABILITY LIST AND RE-PERFORM THE MAINTENANCE AND CERTIFICATION OF THE UNITS. CERTIFYING STAFF LAPSE ON CHECKING THE CAPABILITY LIST.