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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Aircraft cleared by ATC to maintain 3000 ft or above until turning final. The first officer, PF, descended at 250 KTS and then began slowing at 3000 ft. The aircraft had actually gone below the floor of the TCA and thus exceeded the 200 KT limit. Under positive TRACON control, it is not necessarily true, as reporter captain says, that flcs must know all the airspace information.
| Attributes | |
| ACN | 324110 |
| Time | |
| Date | 199512 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : phx |
| State Reference | AZ |
| Altitude | msl bound lower : 3500 msl bound upper : 3500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : phx |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach 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 : 12000 flight time type : 3000 |
| ASRS Report | 324110 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | other anomaly other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Ambiguous |
| Air Traffic Incident | other |
Narrative:
Copilot, when cleared for the visual approach, descended below the floor of the TCA (4000 ft MSL at our location) at 250 KTS then began slowing to 200 KTS. Approach control's clearance was 'maintain at or above 3000 ft until turning final,' however, in our location the TCA floor was 4000 ft MSL. To avoid this, crews must review all airspace information for every airport, slow to 200 KTS before descending on visual approachs.
Original NASA ASRS Text
Title: ACFT CLRED BY ATC TO MAINTAIN 3000 FT OR ABOVE UNTIL TURNING FINAL. THE FO, PF, DSNDED AT 250 KTS AND THEN BEGAN SLOWING AT 3000 FT. THE ACFT HAD ACTUALLY GONE BELOW THE FLOOR OF THE TCA AND THUS EXCEEDED THE 200 KT LIMIT. UNDER POSITIVE TRACON CTL, IT IS NOT NECESSARILY TRUE, AS RPTR CAPT SAYS, THAT FLCS MUST KNOW ALL THE AIRSPACE INFO.
Narrative: COPLT, WHEN CLRED FOR THE VISUAL APCH, DSNDED BELOW THE FLOOR OF THE TCA (4000 FT MSL AT OUR LOCATION) AT 250 KTS THEN BEGAN SLOWING TO 200 KTS. APCH CTL'S CLRNC WAS 'MAINTAIN AT OR ABOVE 3000 FT UNTIL TURNING FINAL,' HOWEVER, IN OUR LOCATION THE TCA FLOOR WAS 4000 FT MSL. TO AVOID THIS, CREWS MUST REVIEW ALL AIRSPACE INFO FOR EVERY ARPT, SLOW TO 200 KTS BEFORE DSNDING ON VISUAL APCHS.
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.