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An A300 on descent into phx exceeds speed limit over tonto intersection. Aircraft was assigned to 250 KTS, but flew 280 KT airspeed. Flight crew doesn't set up FMS properly and is slow to react when aircraft speed remains high.
| Attributes | |
| ACN | 361221 |
| Time | |
| Date | 199702 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : pxr |
| State Reference | AZ |
| Altitude | msl bound lower : 12000 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : phx |
| Operator | common carrier : air carrier |
| Make Model Name | A300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 40 flight time type : 200 |
| ASRS Report | 361221 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 10000 flight time type : 700 |
| ASRS Report | 361620 |
| Events | |
| Anomaly | non adherence : clearance other anomaly |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | none taken : insufficient time |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On approach to phx from abq on the fossl 3 arrival, we were to cross tonto at 12000 ft, 250 KTS. FMS was in profile descent with a speed to maintain of 300 KIAS in the descent. The FMS started to slow the rate of descent at 13000 ft and I programmed the FMS to slow to 250 KTS. I was late and slow making the speed change and we crossed tonto at 280 KTS. Phx approach asked our speed and we replied with 280 KTS slowing to 250 KTS. Phx asked our aircraft and another aircraft about speed restr for descent. We gave them 300 KTS to slow to 250 KTS at tonto. The other aircraft did the same. Supplemental information from acn 361620: airplane was an airbus 300 equipped with 3 IRS's and 2 FMS's. ZAB issued descent clearance and stipulated we cross tonto intersection at 12000 ft MSL and 250 KTS. During the descent, the first officer entered the constraints into the FMS and then accessed the tactical mode and input 300 KTS for the descent airspeed. Descent proceeded uneventfully and I became distraction with other things in the cockpit. As we leveled off at 12000 ft MSL, I looked up and noticed that we were crossing tonto at the assigned altitude but at an airspeed of 300 KTS. The first officer stated that he had been too slow in taking the airplane out of the tactical mode in order to allow it to meet the assigned constraints.
Original NASA ASRS Text
Title: AN A300 ON DSCNT INTO PHX EXCEEDS SPD LIMIT OVER TONTO INTXN. ACFT WAS ASSIGNED TO 250 KTS, BUT FLEW 280 KT AIRSPD. FLC DOESN'T SET UP FMS PROPERLY AND IS SLOW TO REACT WHEN ACFT SPD REMAINS HIGH.
Narrative: ON APCH TO PHX FROM ABQ ON THE FOSSL 3 ARR, WE WERE TO CROSS TONTO AT 12000 FT, 250 KTS. FMS WAS IN PROFILE DSCNT WITH A SPD TO MAINTAIN OF 300 KIAS IN THE DSCNT. THE FMS STARTED TO SLOW THE RATE OF DSCNT AT 13000 FT AND I PROGRAMMED THE FMS TO SLOW TO 250 KTS. I WAS LATE AND SLOW MAKING THE SPD CHANGE AND WE CROSSED TONTO AT 280 KTS. PHX APCH ASKED OUR SPD AND WE REPLIED WITH 280 KTS SLOWING TO 250 KTS. PHX ASKED OUR ACFT AND ANOTHER ACFT ABOUT SPD RESTR FOR DSCNT. WE GAVE THEM 300 KTS TO SLOW TO 250 KTS AT TONTO. THE OTHER ACFT DID THE SAME. SUPPLEMENTAL INFO FROM ACN 361620: AIRPLANE WAS AN AIRBUS 300 EQUIPPED WITH 3 IRS'S AND 2 FMS'S. ZAB ISSUED DSCNT CLRNC AND STIPULATED WE CROSS TONTO INTXN AT 12000 FT MSL AND 250 KTS. DURING THE DSCNT, THE FO ENTERED THE CONSTRAINTS INTO THE FMS AND THEN ACCESSED THE TACTICAL MODE AND INPUT 300 KTS FOR THE DSCNT AIRSPD. DSCNT PROCEEDED UNEVENTFULLY AND I BECAME DISTR WITH OTHER THINGS IN THE COCKPIT. AS WE LEVELED OFF AT 12000 FT MSL, I LOOKED UP AND NOTICED THAT WE WERE XING TONTO AT THE ASSIGNED ALT BUT AT AN AIRSPD OF 300 KTS. THE FO STATED THAT HE HAD BEEN TOO SLOW IN TAKING THE AIRPLANE OUT OF THE TACTICAL MODE IN ORDER TO ALLOW IT TO MEET THE ASSIGNED CONSTRAINTS.
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.