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Air carrier first officer says an aci made them change their vref flap retraction speeds before takeoff at sea. Subsequent ACARS message dictated a second change.
| Attributes | |
| ACN | 198591 |
| Time | |
| Date | 199201 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sea |
| State Reference | WA |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : syr |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | ground : holding ground other : taxi |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 215 flight time total : 4500 |
| ASRS Report | 198591 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | non adherence : published procedure other anomaly other |
| Independent Detector | other other : unspecified |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
While taxiing out to takeoff on runway 34L at sea-tac airport with an FAA inspector in the cockpit, both pilots had proper V1, vr, and 1/2 speeds set and vref speeds set for a tow as per operations manual for large transport (speeds were set vref flaps 30 degrees plus 20, plus 40, plus 60, plus 80 KT flap retract speeds). Prior to receiving our final close-out the FAA inspector told us our retract speeds were incorrect and made both of us readjust our speeds (which were approximately 5 KTS higher than needed). Both pilots readjusted to what FAA inspector told us (which was an adjustment of only 2 KTS. A few mins later we received our final close-out via ACARS and an uplink into the FMC's and we adjusted our vref speeds again.
Original NASA ASRS Text
Title: ACR FO SAYS AN ACI MADE THEM CHANGE THEIR VREF FLAP RETRACTION SPDS BEFORE TKOF AT SEA. SUBSEQUENT ACARS MESSAGE DICTATED A SECOND CHANGE.
Narrative: WHILE TAXIING OUT TO TKOF ON RWY 34L AT SEA-TAC ARPT WITH AN FAA INSPECTOR IN THE COCKPIT, BOTH PLTS HAD PROPER V1, VR, AND 1/2 SPDS SET AND VREF SPDS SET FOR A TOW AS PER OPS MANUAL FOR LGT (SPDS WERE SET VREF FLAPS 30 DEGS PLUS 20, PLUS 40, PLUS 60, PLUS 80 KT FLAP RETRACT SPDS). PRIOR TO RECEIVING OUR FINAL CLOSE-OUT THE FAA INSPECTOR TOLD US OUR RETRACT SPDS WERE INCORRECT AND MADE BOTH OF US READJUST OUR SPDS (WHICH WERE APPROX 5 KTS HIGHER THAN NEEDED). BOTH PLTS READJUSTED TO WHAT FAA INSPECTOR TOLD US (WHICH WAS AN ADJUSTMENT OF ONLY 2 KTS. A FEW MINS LATER WE RECEIVED OUR FINAL CLOSE-OUT VIA ACARS AND AN UPLINK INTO THE FMC'S AND WE ADJUSTED OUR VREF SPDS AGAIN.
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.