 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Commuter PIC report of possible confusion over an altitude assignment from ATC. After arriving at the newly assigned altitude, center controller reaffirmed the altitude given. PIC thought perhaps the mode C was a problem, switched xponders, writing it up at destination.
| Attributes | |
| ACN | 370330 |
| Time | |
| Date | 199705 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : mgw |
| State Reference | WV |
| Altitude | msl bound lower : 21000 msl bound upper : 24000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 135 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 10400 flight time type : 1000 |
| ASRS Report | 370330 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude non adherence : clearance non adherence : far other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : overcame equipment problem other other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
After cruising at FL240, center gave descent to FL210. Upon reaching FL210, center came on with a strange tone in her voice and said 'maintain FL210.' sensing her tone and being level at FL210, we switched xponders and nothing else was said. Wrote it up, just in case.
Original NASA ASRS Text
Title: COMMUTER PIC RPT OF POSSIBLE CONFUSION OVER AN ALT ASSIGNMENT FROM ATC. AFTER ARRIVING AT THE NEWLY ASSIGNED ALT, CTR CTLR REAFFIRMED THE ALT GIVEN. PIC THOUGHT PERHAPS THE MODE C WAS A PROB, SWITCHED XPONDERS, WRITING IT UP AT DEST.
Narrative: AFTER CRUISING AT FL240, CTR GAVE DSCNT TO FL210. UPON REACHING FL210, CTR CAME ON WITH A STRANGE TONE IN HER VOICE AND SAID 'MAINTAIN FL210.' SENSING HER TONE AND BEING LEVEL AT FL210, WE SWITCHED XPONDERS AND NOTHING ELSE WAS SAID. WROTE IT UP, JUST IN CASE.
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.