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An MD90 PIC exceeds the 250 KT speed when receiving a TCASII TA and leveling off 3 mi west of sfo, ca.
| Attributes | |
| ACN | 483040 |
| Time | |
| Date | 200008 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sfo.airport |
| State Reference | CA |
| Altitude | msl bound lower : 3300 msl bound upper : 4100 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : o90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | MD-90 Series (DC-9-90) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 483040 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : multi engine |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : far other anomaly other anomaly other |
| Independent Detector | aircraft equipment : tcas other flight crewa |
| Resolutory Action | flight crew : took precautionary avoidance action other |
| Consequence | Other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance Airspace Structure |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Takeoff runway 28L at sfo. Tower issued late changeover to departure frequency. Passing approximately 3300 ft MSL, climb rate 3600 FPM, speed 250 KTS. TCASII traffic alert required abrupt leveloff to avoid conflict with unknown, unrpted traffic. During abrupt transition to level flight, airspeed increased to approximately 270 KTS at 4100 ft MSL. We immediately reduced power to slow to 250 KTS and contacted departure control. Potential conflict with traffic was avoided.
Original NASA ASRS Text
Title: AN MD90 PIC EXCEEDS THE 250 KT SPD WHEN RECEIVING A TCASII TA AND LEVELING OFF 3 MI W OF SFO, CA.
Narrative: TKOF RWY 28L AT SFO. TWR ISSUED LATE CHANGEOVER TO DEP FREQ. PASSING APPROX 3300 FT MSL, CLB RATE 3600 FPM, SPD 250 KTS. TCASII TFC ALERT REQUIRED ABRUPT LEVELOFF TO AVOID CONFLICT WITH UNKNOWN, UNRPTED TFC. DURING ABRUPT TRANSITION TO LEVEL FLT, AIRSPD INCREASED TO APPROX 270 KTS AT 4100 FT MSL. WE IMMEDIATELY REDUCED PWR TO SLOW TO 250 KTS AND CONTACTED DEP CTL. POTENTIAL CONFLICT WITH TFC WAS AVOIDED.
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.