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BE36 pilot reports being distracted during avionics and autopilot system test and forgets to extend landing gear; resulting in a gear up landing.
| Attributes | |
| ACN | 746816 |
| Time | |
| Date | 200707 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 msl single value : 2200 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : tpa.tower |
| Operator | general aviation : personal |
| Make Model Name | Bonanza 36 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | landing : roll |
| Flight Plan | None |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : commercial pilot : cfi pilot : multi engine |
| Experience | flight time last 90 days : 100 flight time total : 7750 flight time type : 500 |
| ASRS Report | 746816 |
| Events | |
| Anomaly | ground encounters : gear up landing |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Gear not lowered at marker on ILS approach. Autoplt coupled approach was being tested for GS intercept; due to failure 30 mins earlier during instructional approach at a different airport. GS intercept did occur; but preoccupation with localizer and flight director inaccuracies (supposedly corrected during recent visit to avionics shop) caused annoying distraction leading to failure to lower gear. The situation might have been saved if the tower had noted the gear not down; or if the gear warning horn had sounded as it should have below 14 inches manifold pressure. (It did not activate; even at 10-12 inches manifold pressure.) a final gumps check on short final would have prevented this occurrence.
Original NASA ASRS Text
Title: BE36 PILOT REPORTS BEING DISTRACTED DURING AVIONICS AND AUTOPILOT SYSTEM TEST AND FORGETS TO EXTEND LANDING GEAR; RESULTING IN A GEAR UP LANDING.
Narrative: GEAR NOT LOWERED AT MARKER ON ILS APCH. AUTOPLT COUPLED APCH WAS BEING TESTED FOR GS INTERCEPT; DUE TO FAILURE 30 MINS EARLIER DURING INSTRUCTIONAL APCH AT A DIFFERENT ARPT. GS INTERCEPT DID OCCUR; BUT PREOCCUPATION WITH LOC AND FLT DIRECTOR INACCURACIES (SUPPOSEDLY CORRECTED DURING RECENT VISIT TO AVIONICS SHOP) CAUSED ANNOYING DISTR LEADING TO FAILURE TO LOWER GEAR. THE SITUATION MIGHT HAVE BEEN SAVED IF THE TWR HAD NOTED THE GEAR NOT DOWN; OR IF THE GEAR WARNING HORN HAD SOUNDED AS IT SHOULD HAVE BELOW 14 INCHES MANIFOLD PRESSURE. (IT DID NOT ACTIVATE; EVEN AT 10-12 INCHES MANIFOLD PRESSURE.) A FINAL GUMPS CHK ON SHORT FINAL WOULD HAVE PREVENTED THIS OCCURRENCE.
Data retrieved from NASA's ASRS site as of January 2009 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.