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ZJX controller described loss of separation at approximately 12;000 ft; when air carrier failed to comply with altitude restriction; conflicting with another aircraft.
| Attributes | |
| ACN | 816137 |
| Time | |
| Date | 200812 |
| Place | |
| Locale Reference | airport : mco.airport |
| State Reference | FL |
| Altitude | msl bound lower : 12000 msl bound upper : 13000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zjx.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zjx.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-88 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 15 controller time certified in position1 : 15 |
| ASRS Report | 816137 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar instruction : trainee |
| Qualification | controller : developmental |
| Experience | flight time total : 200 |
| ASRS Report | 815978 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 24000 vertical : 600 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
I was training mr. X at R57/R58 st. Augustine sectors. At the time we had 6 arrivals with minimum spacing that we had to get 5 miles and increasing. After giving the restrictions to all aircraft; aircraft X was observed south of ormond beach (omn) not decreasing his speed and being high for the restriction at lamma. Aircraft X was given a clearance to reduce speed to 250 KTS and the next clearance was to stop at 13;000 ft. Aircraft X was at 14;000 ft when the clearance was given and read back. The next 2 radar updates were 13;800 ft and 13;100 ft. The 4th update was 12;600 ft; at this time the pilot of aircraft X advised ATC he was returning to 13;000 ft. At no time did aircraft X advise ATC he could not accept or comply with the restriction. Supplemental information from acn 815923: clearance from ATC: 'descend and cross lamma 250 KTS; 12;000 ft.' during the descent at about 14;000 ft; ATC commanded: 'stop descent at 13;000 ft.' captain set 13;000 ft in the altitude window and I called and pointed 13;000 ft. Then I was busy with my other pilot not flying duties (radio dial; approach plate verification) when I heard the autopilot disconnect beep sound and I looked to the altimeter indicating 12;750 ft and I saw the captain hand flying and climbing back to 13;000 ft. I asked the captain about busting an altitude and he reassured me that he didn't.
Original NASA ASRS Text
Title: ZJX controller described loss of separation at approximately 12;000 FT; when air carrier failed to comply with altitude restriction; conflicting with another aircraft.
Narrative: I was training Mr. X at R57/R58 St. Augustine sectors. At the time we had 6 arrivals with minimum spacing that we had to get 5 miles and increasing. After giving the restrictions to all aircraft; Aircraft X was observed south of Ormond Beach (OMN) not decreasing his speed and being high for the restriction at LAMMA. Aircraft X was given a clearance to reduce speed to 250 KTS and the next clearance was to stop at 13;000 FT. Aircraft X was at 14;000 FT when the clearance was given and read back. The next 2 radar updates were 13;800 FT and 13;100 FT. The 4th update was 12;600 FT; at this time the pilot of Aircraft X advised ATC he was returning to 13;000 FT. At no time did Aircraft X advise ATC he could not accept or comply with the restriction. Supplemental information from ACN 815923: Clearance from ATC: 'descend and cross LAMMA 250 KTS; 12;000 FT.' During the descent at about 14;000 FT; ATC commanded: 'Stop descent at 13;000 FT.' Captain set 13;000 FT in the Altitude Window and I called and pointed 13;000 FT. Then I was busy with my other Pilot Not Flying duties (radio dial; approach plate verification) when I heard the autopilot disconnect beep sound and I looked to the altimeter indicating 12;750 FT and I saw the Captain hand flying and climbing back to 13;000 FT. I asked the Captain about busting an altitude and he reassured me that he didn't.
Data retrieved from NASA's ASRS site as of May 2009 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.