Service difficulty report · Check Valve · Hawbee 4000

Difficulty date
December 22, 2011
Submitted
December 28, 2011
Operation
General aviation
Aircraft
N78KN
Make and model
Hawbee 4000
Aircraft serial
6983
Aircraft time
430 hours
Part
Check Valve
Part number
4E42861
Part serial
N0819003
Condition
Faulty
Location
Potable Water
Part time
698 hours, 430 cycles
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

POTABLE WATER IN LAV HAS LOW PRESSURE AND PUMP CONTINUOUSLY CYCLES. R & R DRAIN CHECK VALVE. OPS CHECKED GOOD. INSPECTED CHECK VALVE ON BENCH AND FOUND VALVE NOT COMPLETELY CLOSING AND REQUIRING EXCESSIVE PRESSURE TO CLOSE AT ALL.