 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A cessna TR182 pilot inadvertently hit his autotrim switch causing his aircraft to climb above assigned altitude.
| Attributes | |
| ACN | 338500 |
| Time | |
| Date | 199606 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : sgd airport : apc |
| State Reference | CA |
| Altitude | msl bound lower : 4000 msl bound upper : 4300 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zoa tower : lax |
| Make Model Name | Skylane 182/RG Turbo Skylane/RG |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 38 flight time total : 5200 |
| ASRS Report | 338500 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Practice IFR approach to napa, VOR 6. 700 ft overcast, 2200-ft tops, marine layer, 29.91 inches. IFR filed, apc direct sgd direct apc at 4000 ft. Takeoff clearance, contacted center, cleared to 4000 ft, outbound 230 degree radial sgd on VOR 6 approach. Climbed to 4300 ft, was starting descent to 4000 ft when center requested altitude, replied 4300 ft. WX clear above 2200 ft. Was told to descend to 4000 ft. Was called second time for altitude, replied 4100 ft descending. Was told to call ZOA. I accidentally touched autotrim switch on yoke, turning off altitude preselect and climbed to 4300 ft before noticing in scan. I was starting to correct to 4000 ft when called. Balance of approach uneventful.
Original NASA ASRS Text
Title: A CESSNA TR182 PLT INADVERTENTLY HIT HIS AUTOTRIM SWITCH CAUSING HIS ACFT TO CLB ABOVE ASSIGNED ALT.
Narrative: PRACTICE IFR APCH TO NAPA, VOR 6. 700 FT OVCST, 2200-FT TOPS, MARINE LAYER, 29.91 INCHES. IFR FILED, APC DIRECT SGD DIRECT APC AT 4000 FT. TKOF CLRNC, CONTACTED CTR, CLRED TO 4000 FT, OUTBOUND 230 DEG RADIAL SGD ON VOR 6 APCH. CLBED TO 4300 FT, WAS STARTING DSCNT TO 4000 FT WHEN CTR REQUESTED ALT, REPLIED 4300 FT. WX CLR ABOVE 2200 FT. WAS TOLD TO DSND TO 4000 FT. WAS CALLED SECOND TIME FOR ALT, REPLIED 4100 FT DSNDING. WAS TOLD TO CALL ZOA. I ACCIDENTALLY TOUCHED AUTOTRIM SWITCH ON YOKE, TURNING OFF ALT PRESELECT AND CLBED TO 4300 FT BEFORE NOTICING IN SCAN. I WAS STARTING TO CORRECT TO 4000 FT WHEN CALLED. BALANCE OF APCH UNEVENTFUL.
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.