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A DC9 flight crew allows their aircraft to climb back up out of FL240 to FL247 pt 8 before the altitude alerter brought the deviation to their attention 18 NM northeast of jfk, ny.
| Attributes | |
| ACN | 476010 |
| Time | |
| Date | 200006 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : jfk.vor |
| State Reference | NY |
| Altitude | msl bound lower : 24000 msl bound upper : 24780 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zbw.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | cruise : enroute altitude change |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 700 flight time total : 13000 flight time type : 400 |
| ASRS Report | 476010 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 60 flight time total : 3500 flight time type : 300 |
| ASRS Report | 475922 |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : alt alert |
| Resolutory Action | flight crew : returned to assigned altitude |
| Consequence | Other |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance Aircraft |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We had descended and leveled at FL240. After the altitude alerter went off at approximately FL247.8, we regained our altitude to FL240. The autoplt had been maintaining 100 ft plus the selected altitude for 3 legs. It apparently deviated a little more than 100 ft in this instance.
Original NASA ASRS Text
Title: A DC9 FLC ALLOWS THEIR ACFT TO CLB BACK UP OUT OF FL240 TO FL247 PT 8 BEFORE THE ALT ALERTER BROUGHT THE DEV TO THEIR ATTN 18 NM NE OF JFK, NY.
Narrative: WE HAD DSNDED AND LEVELED AT FL240. AFTER THE ALT ALERTER WENT OFF AT APPROX FL247.8, WE REGAINED OUR ALT TO FL240. THE AUTOPLT HAD BEEN MAINTAINING 100 FT PLUS THE SELECTED ALT FOR 3 LEGS. IT APPARENTLY DEVIATED A LITTLE MORE THAN 100 FT IN THIS INSTANCE.
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.