Service difficulty report · Pressure Switch · Cessna 510

Difficulty date
February 18, 2026
Submitted
February 18, 2026
Operation
General aviation
Aircraft
N79SG
Make and model
Cessna 510
Aircraft serial
5100043
Aircraft time
4,274 hours, 3,749 cycles
Engine
Pwc PW615FA
Part
Pressure Switch
Part number
99120332
Part serial
13262
Condition
Leaking
Location
Fuel Sys
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

REPEATED FAILURE OF FUEL PRESSURE SWITCH P/N: 9912033-2 CAUSING FUEL TO LEAK FROM THE WEEP HOLE OF THE SWITCH BODY. FUEL THEN LEAKS INTO THE COWLING. FAILURES INCLUDE SWITCH S/N'S: 13646, 13661, 13262 ALL FAILURES HAVE OCCURRED WITHIN A 12-MONTH PERIOD OF 01/2025-01/2026.

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