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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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ATC intervened as the flight crew of an medium large transport were descending through the altitude to which they believed they were cleared and advised that the altitude was 1000 ft above. After the tapes were reviewed by ATC, it revealed that the flight crew were given the altitude to which they had descended.
| Attributes | |
| ACN | 336610 |
| Time | |
| Date | 199605 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : fak |
| State Reference | VA |
| Altitude | msl bound lower : 22000 msl bound upper : 23000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | enroute airway : j51 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : cfi pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 200 flight time total : 15000 flight time type : 4000 |
| ASRS Report | 336610 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
Cruising at FL330 approximately 35 mi south of flatrock (northbound), controller issued clearance to cross fak at FL220. I took the clearance, read it back, concurred with first officer and then first officer made descent. Over fak, controller asked our altitude. I told him FL220. He then issued clearance to climb to FL230, which we did. After landing at destination (phl), I called controller on phone and talked about what happened. Several days later, controller notified me that we were issued the original clearance -- fak at FL220 -- and problem was with center.
Original NASA ASRS Text
Title: ATC INTERVENED AS THE FLC OF AN MLG WERE DSNDING THROUGH THE ALT TO WHICH THEY BELIEVED THEY WERE CLRED AND ADVISED THAT THE ALT WAS 1000 FT ABOVE. AFTER THE TAPES WERE REVIEWED BY ATC, IT REVEALED THAT THE FLC WERE GIVEN THE ALT TO WHICH THEY HAD DSNDED.
Narrative: CRUISING AT FL330 APPROX 35 MI S OF FLATROCK (NBOUND), CTLR ISSUED CLRNC TO CROSS FAK AT FL220. I TOOK THE CLRNC, READ IT BACK, CONCURRED WITH FO AND THEN FO MADE DSCNT. OVER FAK, CTLR ASKED OUR ALT. I TOLD HIM FL220. HE THEN ISSUED CLRNC TO CLB TO FL230, WHICH WE DID. AFTER LNDG AT DEST (PHL), I CALLED CTLR ON PHONE AND TALKED ABOUT WHAT HAPPENED. SEVERAL DAYS LATER, CTLR NOTIFIED ME THAT WE WERE ISSUED THE ORIGINAL CLRNC -- FAK AT FL220 -- AND PROB WAS WITH CTR.
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.