 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Medium large transport failed to comply with clearance speed restriction and began overtaking aircraft large transport.
| Attributes | |
| ACN | 90380 |
| Time | |
| Date | 198807 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : oak |
| State Reference | CA |
| Altitude | msl bound lower : 13800 msl bound upper : 14000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zoa |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure sid : sid |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure sid : sid |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 87 flight time total : 9500 flight time type : 87 |
| ASRS Report | 90380 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 160 flight time total : 12000 flight time type : 1800 |
| ASRS Report | 90828 |
| Events | |
| Anomaly | non adherence : clearance other anomaly |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 30000 vertical : 1000 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Our clearance was oak 3 departure rbl trans af, climb to 23000', expect 35000' in 10 mins, maintain 250 KTS until advised during the departure. Numerous traffic targets were called to our attention. Some we saw and some we did not. At about 11000' MSL we were handed off to oak center from bay departure. We checked in climbing to FL230. I was accelerating to 290 KIAS as shown on our pre departure clearance. I thought bay departure gave us resume normal speed. At 13800' MSL oak center said stop the climb at 14000' and we did so abruptly. Then ZOA asked what our speed was and if we were speed restr. We said 290 KTS and no further restriction. I believe they had traffic ahead about 5 mi. I never saw it. After the traffic passed we continued our climb to cruise altitude. I don't know for sure whether or not we did in fact have a clearance to resume normal speed. We were busy with normal departure procedures, traffic scanning, radios and navigation. I'm new to the medium large transport so I was also concentrating on smooth control inputs and precise navigation. I don't believe there was any compromise of safety here but there was a potential for a near miss. ATC and pilots must both work together to make air travel safe. I will certainly pay closer attention to 'resume normal speed' and I will continue to look for other traffic. No matter who made the error today, the system worked and traffic sep was accomplished.
Original NASA ASRS Text
Title: MLG FAILED TO COMPLY WITH CLRNC SPEED RESTRICTION AND BEGAN OVERTAKING ACFT LGT.
Narrative: OUR CLRNC WAS OAK 3 DEP RBL TRANS AF, CLB TO 23000', EXPECT 35000' IN 10 MINS, MAINTAIN 250 KTS UNTIL ADVISED DURING THE DEP. NUMEROUS TFC TARGETS WERE CALLED TO OUR ATTN. SOME WE SAW AND SOME WE DID NOT. AT ABOUT 11000' MSL WE WERE HANDED OFF TO OAK CENTER FROM BAY DEP. WE CHKED IN CLBING TO FL230. I WAS ACCELERATING TO 290 KIAS AS SHOWN ON OUR PDC. I THOUGHT BAY DEP GAVE US RESUME NORMAL SPD. AT 13800' MSL OAK CENTER SAID STOP THE CLB AT 14000' AND WE DID SO ABRUPTLY. THEN ZOA ASKED WHAT OUR SPEED WAS AND IF WE WERE SPD RESTR. WE SAID 290 KTS AND NO FURTHER RESTRICTION. I BELIEVE THEY HAD TFC AHEAD ABOUT 5 MI. I NEVER SAW IT. AFTER THE TFC PASSED WE CONTINUED OUR CLB TO CRUISE ALT. I DON'T KNOW FOR SURE WHETHER OR NOT WE DID IN FACT HAVE A CLRNC TO RESUME NORMAL SPD. WE WERE BUSY WITH NORMAL DEP PROCS, TFC SCANNING, RADIOS AND NAV. I'M NEW TO THE MLG SO I WAS ALSO CONCENTRATING ON SMOOTH CTL INPUTS AND PRECISE NAV. I DON'T BELIEVE THERE WAS ANY COMPROMISE OF SAFETY HERE BUT THERE WAS A POTENTIAL FOR A NEAR MISS. ATC AND PLTS MUST BOTH WORK TOGETHER TO MAKE AIR TRAVEL SAFE. I WILL CERTAINLY PAY CLOSER ATTN TO 'RESUME NORMAL SPD' AND I WILL CONTINUE TO LOOK FOR OTHER TFC. NO MATTER WHO MADE THE ERROR TODAY, THE SYS WORKED AND TFC SEP WAS ACCOMPLISHED.
Data retrieved from NASA's ASRS site as of August 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.