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A PA28R private pilot loses his primary electrical AC power and, failing to use his emergency gear extension system properly, lands gear up at Y66, mi.
| Attributes | |
| ACN | 516673 |
| Time | |
| Date | 200107 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : y66.airport |
| State Reference | MI |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | PA-28 Cherokee Arrow IV |
| Operating Under FAR Part | Part 91 |
| Flight Phase | landing : roll |
| Person 1 | |
| Function | flight crew : single pilot |
| Qualification | pilot : private |
| Experience | flight time last 90 days : 35 flight time total : 294 flight time type : 74 |
| ASRS Report | 516673 |
| Events | |
| Anomaly | aircraft equipment problem : critical ground encounters : gear up landing non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : volt meter other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft Chart Or Publication Flight Crew Human Performance |
| Primary Problem | Aircraft |
Narrative:
The flight was normal. Alternator checked ok on start up. Radios started a backgnd noise about 20-25 NM from destination airport. My portable GPS told me I had 6.5 volts so I checked circuit breakers and alternator switch. Shut down electrical gear (not master switch), got out my portable radio. Slowed down and extended gear. GPS went dead (on aircraft power) and did not get 3 green landing gear lights. Called position and intention to land. Asked if anyone on ground at destination airport. No response. (Was going to ask for confirmation of landing gear.) felt comfortable that gear was extended. I remember reading in aircraft manual that no power was required to extend gear. Made a landing and was surprised that gear was not down. After plane was jacked up, I turned on the master switch and gear came right down. I had the automatic gear extender overridden, as I had been taught to do. Had I thought the gear was not down, I would have gone through the emergency gear extension procedure in the aircraft manual, but again, I believed the gear to be down.
Original NASA ASRS Text
Title: A PA28R PVT PLT LOSES HIS PRIMARY ELECTRICAL AC PWR AND, FAILING TO USE HIS EMER GEAR EXTENSION SYS PROPERLY, LANDS GEAR UP AT Y66, MI.
Narrative: THE FLT WAS NORMAL. ALTERNATOR CHKED OK ON START UP. RADIOS STARTED A BACKGND NOISE ABOUT 20-25 NM FROM DEST ARPT. MY PORTABLE GPS TOLD ME I HAD 6.5 VOLTS SO I CHKED CIRCUIT BREAKERS AND ALTERNATOR SWITCH. SHUT DOWN ELECTRICAL GEAR (NOT MASTER SWITCH), GOT OUT MY PORTABLE RADIO. SLOWED DOWN AND EXTENDED GEAR. GPS WENT DEAD (ON ACFT PWR) AND DID NOT GET 3 GREEN LNDG GEAR LIGHTS. CALLED POS AND INTENTION TO LAND. ASKED IF ANYONE ON GND AT DEST ARPT. NO RESPONSE. (WAS GOING TO ASK FOR CONFIRMATION OF LNDG GEAR.) FELT COMFORTABLE THAT GEAR WAS EXTENDED. I REMEMBER READING IN ACFT MANUAL THAT NO PWR WAS REQUIRED TO EXTEND GEAR. MADE A LNDG AND WAS SURPRISED THAT GEAR WAS NOT DOWN. AFTER PLANE WAS JACKED UP, I TURNED ON THE MASTER SWITCH AND GEAR CAME RIGHT DOWN. I HAD THE AUTOMATIC GEAR EXTENDER OVERRIDDEN, AS I HAD BEEN TAUGHT TO DO. HAD I THOUGHT THE GEAR WAS NOT DOWN, I WOULD HAVE GONE THROUGH THE EMER GEAR EXTENSION PROC IN THE ACFT MANUAL, BUT AGAIN, I BELIEVED THE GEAR TO BE DOWN.
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.