An small aircraft pilot had a partial failure of his fuel pump.

Attributes
ACN	225244
Time
Date	199211
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sat
State Reference	TX
Altitude	msl bound lower : 2500 msl bound upper : 2500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sat
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	descent : approach
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : cfi pilot : private pilot : instrument pilot : commercial
Experience	flight time last 90 days : 88 flight time total : 505 flight time type : 15
ASRS Report	225244
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : overcame equipment problem other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

On the afternoon of nov/sun/92, as I was coming into land at san antonio, tx, I reduced manifold pressure 3 inches according to checklist. At this time, I heard a pop come from the engine. I thought it might be just the engine backfiring, but when I noticed a loss of fuel pressure, I knew something was wrong. As I reduced power below 15 inches, the engine began to run real rough. At this point I knew something was wrong. I landed the aircraft and went through the shutdown procedure promptly. I did not declare an emergency. Throughout the situation, there was no indication in loss of power or oil pressure, just the loss of fuel. I feel what caused the problem was terrible workmanship on part of manufacturer or it was the problem of who installed the part in question.

Original NASA ASRS Text

Title: AN SMA PLT HAD A PARTIAL FAILURE OF HIS FUEL PUMP.

Narrative: ON THE AFTERNOON OF NOV/SUN/92, AS I WAS COMING INTO LAND AT SAN ANTONIO, TX, I REDUCED MANIFOLD PRESSURE 3 INCHES ACCORDING TO CHKLIST. AT THIS TIME, I HEARD A POP COME FROM THE ENG. I THOUGHT IT MIGHT BE JUST THE ENG BACKFIRING, BUT WHEN I NOTICED A LOSS OF FUEL PRESSURE, I KNEW SOMETHING WAS WRONG. AS I REDUCED PWR BELOW 15 INCHES, THE ENG BEGAN TO RUN REAL ROUGH. AT THIS POINT I KNEW SOMETHING WAS WRONG. I LANDED THE ACFT AND WENT THROUGH THE SHUTDOWN PROC PROMPTLY. I DID NOT DECLARE AN EMER. THROUGHOUT THE SITUATION, THERE WAS NO INDICATION IN LOSS OF PWR OR OIL PRESSURE, JUST THE LOSS OF FUEL. I FEEL WHAT CAUSED THE PROBLEM WAS TERRIBLE WORKMANSHIP ON PART OF MANUFACTURER OR IT WAS THE PROBLEM OF WHO INSTALLED THE PART IN QUESTION.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.