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Flight crew of an cpr jet overshot assigned climb altitude due to the PIC thinking the altitude restr was airspeed.
| Attributes | |
| ACN | 304191 |
| Time | |
| Date | 199505 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : niz |
| State Reference | FO |
| Altitude | msl bound lower : 25000 msl bound upper : 25900 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : corporate |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute airway : v52 |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 100 flight time total : 7500 flight time type : 150 |
| ASRS Report | 304191 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Miss Distance | vertical : 1000 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Was operating as part 91 with company president who is qualified in aircraft, occupying the pilot seat. Subsequent to departure was re-routed to hou due to airport closure at new. During climb through 16000 ft to the assigned altitude of FL310, was instructed by merida center: 'not above 250 until further advised.' I subsequently readback 'roger maintain 250 KTS until advised.' as we passed FL259 was informed by ATC to initiate an immediate descent to FL250. As we leveled back at FL250, a B727 passed off of our left at FL260. The following attributed to this situation: the ceo's hurry to leave, his wanting to fly a complicated corporate turbojet aircraft, ATC delays at cancun coupled with extreme heat and discomfort, icoa refusal to police the speaking of other non-english languages on frequency, usage of non-standard radio terminology 'not above 250 until further advised,' complacency with regard to the assumption that '250' meant airspeed and not the intended altitude restr, additional duties of international operations coupled with the PF limitations, due to his non-professional status.
Original NASA ASRS Text
Title: FLC OF AN CPR JET OVERSHOT ASSIGNED CLB ALT DUE TO THE PIC THINKING THE ALT RESTR WAS AIRSPD.
Narrative: WAS OPERATING AS PART 91 WITH COMPANY PRESIDENT WHO IS QUALIFIED IN ACFT, OCCUPYING THE PLT SEAT. SUBSEQUENT TO DEP WAS RE-ROUTED TO HOU DUE TO ARPT CLOSURE AT NEW. DURING CLB THROUGH 16000 FT TO THE ASSIGNED ALT OF FL310, WAS INSTRUCTED BY MERIDA CTR: 'NOT ABOVE 250 UNTIL FURTHER ADVISED.' I SUBSEQUENTLY READBACK 'ROGER MAINTAIN 250 KTS UNTIL ADVISED.' AS WE PASSED FL259 WAS INFORMED BY ATC TO INITIATE AN IMMEDIATE DSCNT TO FL250. AS WE LEVELED BACK AT FL250, A B727 PASSED OFF OF OUR L AT FL260. THE FOLLOWING ATTRIBUTED TO THIS SIT: THE CEO'S HURRY TO LEAVE, HIS WANTING TO FLY A COMPLICATED CORPORATE TURBOJET ACFT, ATC DELAYS AT CANCUN COUPLED WITH EXTREME HEAT AND DISCOMFORT, ICOA REFUSAL TO POLICE THE SPEAKING OF OTHER NON-ENGLISH LANGUAGES ON FREQ, USAGE OF NON-STANDARD RADIO TERMINOLOGY 'NOT ABOVE 250 UNTIL FURTHER ADVISED,' COMPLACENCY WITH REGARD TO THE ASSUMPTION THAT '250' MEANT AIRSPD AND NOT THE INTENDED ALT RESTR, ADDITIONAL DUTIES OF INTL OPS COUPLED WITH THE PF LIMITATIONS, DUE TO HIS NON-PROFESSIONAL STATUS.
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.