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A PA28 single pilot lost his alternator during approach to dsm which caused his radio, transponder, and landing gear to malfunction.
| Attributes | |
| ACN | 612952 |
| Time | |
| Date | 200403 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dsm.airport |
| State Reference | IA |
| Altitude | msl single value : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dsm.tracon tower : dsm.tower |
| Operator | general aviation : personal |
| Make Model Name | PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other |
| Flight Phase | cruise : level descent : approach landing : go around |
| Route In Use | approach : traffic pattern |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : private |
| Experience | flight time last 90 days : 8 flight time total : 700 flight time type : 200 |
| ASRS Report | 612952 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : landed in emergency condition flight crew : landed as precaution |
| Consequence | other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft |
| Primary Problem | Aircraft |
Narrative:
The airplane lost alternator power in cruise flight. I was in touch with des moines approach and requested clearance to des moines. I was cleared to land runway 5 at dsm. On final approach, the radio and transponder failed. The landing gear also failed to extend. I overflew the runway and executed a missed approach. Back at altitude, I extended the landing gear using the emergency gear extension system. I then proceeded back into the pattern, cleared the approach path visually, and landed without incident on runway 5. I proceeded to taxi to the GA ramp to troubleshoot the problem.
Original NASA ASRS Text
Title: A PA28 SINGLE PLT LOST HIS ALTERNATOR DURING APCH TO DSM WHICH CAUSED HIS RADIO, XPONDER, AND LNDG GEAR TO MALFUNCTION.
Narrative: THE AIRPLANE LOST ALTERNATOR PWR IN CRUISE FLT. I WAS IN TOUCH WITH DES MOINES APCH AND REQUESTED CLRNC TO DES MOINES. I WAS CLRED TO LAND RWY 5 AT DSM. ON FINAL APCH, THE RADIO AND XPONDER FAILED. THE LNDG GEAR ALSO FAILED TO EXTEND. I OVERFLEW THE RWY AND EXECUTED A MISSED APCH. BACK AT ALT, I EXTENDED THE LNDG GEAR USING THE EMER GEAR EXTENSION SYS. I THEN PROCEEDED BACK INTO THE PATTERN, CLRED THE APCH PATH VISUALLY, AND LANDED WITHOUT INCIDENT ON RWY 5. I PROCEEDED TO TAXI TO THE GA RAMP TO TROUBLESHOOT THE PROB.
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.