I took off this morning to escape a cold Georgia day for the Florida keys.
Start up check.
Warm up check.
Taxi to fuel, check.
Run up, check
Take off all normal and green. Boost pump off 1000 feet, fuel pressure normal.
Out of 5K for 9K, fuel throttle, 2700 RPM, I noticed the fuel pressure drops down to 12.8 PSI and starts floating between that and 13 PSI. Boost pump on, PSI back up to 25 PSI. Level off everything running normal. Shut boost pump off, fuel pressure drops to 18 psi and is varies one or two psi. Switched tanks with same results.
Pump back on, back to the hanger. Before shutting down I did a static run up to fuel power. With boost pump on 25 PSI, when switched off it drops down and varies around 18-20 psi.
Total time 180 hours. I think the pump is failing but its not old so checking to see if I should check other things before pulling it.
Start up check.
Warm up check.
Taxi to fuel, check.
Run up, check
Take off all normal and green. Boost pump off 1000 feet, fuel pressure normal.
Out of 5K for 9K, fuel throttle, 2700 RPM, I noticed the fuel pressure drops down to 12.8 PSI and starts floating between that and 13 PSI. Boost pump on, PSI back up to 25 PSI. Level off everything running normal. Shut boost pump off, fuel pressure drops to 18 psi and is varies one or two psi. Switched tanks with same results.
Pump back on, back to the hanger. Before shutting down I did a static run up to fuel power. With boost pump on 25 PSI, when switched off it drops down and varies around 18-20 psi.
Total time 180 hours. I think the pump is failing but its not old so checking to see if I should check other things before pulling it.