 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A private instrument rated pilot flying a PA32 near clt misheard a climb clearance that was denied which resulted in an altitude deviation.
| Attributes | |
| ACN | 434660 |
| Time | |
| Date | 199904 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : clt.vortac |
| State Reference | NC |
| Altitude | msl bound lower : 16000 msl bound upper : 16600 |
| Environment | |
| Flight Conditions | Mixed |
| Weather Elements | Turbulence |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl.artcc |
| Operator | general aviation : personal |
| Make Model Name | PA-32 Cherokee Six/Lance/Saratoga |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : enroute altitude change |
| Route In Use | enroute other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | other |
| Function | flight crew : single pilot oversight : pic |
| Qualification | pilot : instrument pilot : private |
| Experience | flight time last 90 days : 39 flight time total : 640 flight time type : 38 |
| ASRS Report | 434660 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : far non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued advisory controller : provided flight assist flight crew : returned to original clearance |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Flying in and out of clouds at 12000 ft I had experienced turbulence with altitude excursions up to 800 ft. I asked for and received clrncs at 14000 ft, then 16000 ft. Because of continued problems, I requested FL180. What I thought I heard was a clearance to FL180, reset altimeter 29.92. What I gather (in retrospect) may have been said was, 'unable, FL180 unusable because altimeter less than 29.92...' or something to that effect. Anyway, after acknowledging what I thought was a clearance, I climbed. At about 16600 ft the controller told me we weren't communicating and that I was not cleared above 16000 ft. I immediately resumed 16000 ft, excursion lasted less than 30 seconds.
Original NASA ASRS Text
Title: A PVT INST RATED PLT FLYING A PA32 NEAR CLT MISHEARD A CLB CLRNC THAT WAS DENIED WHICH RESULTED IN AN ALTDEV.
Narrative: FLYING IN AND OUT OF CLOUDS AT 12000 FT I HAD EXPERIENCED TURB WITH ALT EXCURSIONS UP TO 800 FT. I ASKED FOR AND RECEIVED CLRNCS AT 14000 FT, THEN 16000 FT. BECAUSE OF CONTINUED PROBS, I REQUESTED FL180. WHAT I THOUGHT I HEARD WAS A CLRNC TO FL180, RESET ALTIMETER 29.92. WHAT I GATHER (IN RETROSPECT) MAY HAVE BEEN SAID WAS, 'UNABLE, FL180 UNUSABLE BECAUSE ALTIMETER LESS THAN 29.92...' OR SOMETHING TO THAT EFFECT. ANYWAY, AFTER ACKNOWLEDGING WHAT I THOUGHT WAS A CLRNC, I CLBED. AT ABOUT 16600 FT THE CTLR TOLD ME WE WEREN'T COMMUNICATING AND THAT I WAS NOT CLRED ABOVE 16000 FT. I IMMEDIATELY RESUMED 16000 FT, EXCURSION LASTED LESS THAN 30 SECONDS.
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.