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A B737-800 first officer reports that after changing from a ILS 1 to a VOR/DME runway 19; a WX return on final forced a go around with a stall warning; slow throttle response; and a crew task overload. A foreign language controller added to the confusion.
| Attributes | |
| ACN | 793896 |
| Time | |
| Date | 200807 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzzz.airport |
| State Reference | FO |
| Altitude | msl single value : 10000 |
| Environment | |
| Weather Elements | Rain Thunderstorm |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| ASRS Report | 793896 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | inflight encounter : turbulence inflight encounter : weather other anomaly |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : exited adverse environment flight crew : took precautionary avoidance action flight crew : executed missed approach |
| Supplementary | |
| Problem Areas | Environmental Factor Weather ATC Human Performance |
| Primary Problem | Weather |
Narrative:
Approach persuaded us to try the VOR/DME runway 19 approach although we had loaded and briefed ILS/DME02 runway 01. We quickly rebriefed and set up the VOR runway 19. After starting approach we saw WX radar return on approach course. Queried ATC and they said previous flight had windshear alert +/- 15 KTS. Captain elected to discontinue approach. Confusion started when I was unable to communicate with ATC which was speaking foreign language to another airplane while we initiated go around. We got a momentary stick shaker in the confusion which after discussion we think may have also been related to turbulence/unsteady air (airspeed indicator bouncing). I think we had 135 KTS; below vref of 141 or so and in the yellow band. Captain quickly recovered and we lost no altitude. I felt I should have been more alert and warned him of low airspeed but I did not see it until the shaker started. We also think slow autothrottle response with airplane at gear down and flaps 25 then 15 may have been a factor. After establishing communications we got vectored to the ILS/DME02 runway 01 and landed uneventfully.
Original NASA ASRS Text
Title: A B737-800 FO RPTS THAT AFTER CHANGING FROM A ILS 1 TO A VOR/DME RWY 19; A WX RETURN ON FINAL FORCED A GAR WITH A STALL WARNING; SLOW THROTTLE RESPONSE; AND A CREW TASK OVERLOAD. A FOREIGN LANGUAGE CTLR ADDED TO THE CONFUSION.
Narrative: APCH PERSUADED US TO TRY THE VOR/DME RWY 19 APCH ALTHOUGH WE HAD LOADED AND BRIEFED ILS/DME02 RWY 01. WE QUICKLY REBRIEFED AND SET UP THE VOR RWY 19. AFTER STARTING APCH WE SAW WX RADAR RETURN ON APCH COURSE. QUERIED ATC AND THEY SAID PREVIOUS FLT HAD WINDSHEAR ALERT +/- 15 KTS. CAPT ELECTED TO DISCONTINUE APCH. CONFUSION STARTED WHEN I WAS UNABLE TO COMMUNICATE WITH ATC WHICH WAS SPEAKING FOREIGN LANGUAGE TO ANOTHER AIRPLANE WHILE WE INITIATED GAR. WE GOT A MOMENTARY STICK SHAKER IN THE CONFUSION WHICH AFTER DISCUSSION WE THINK MAY HAVE ALSO BEEN RELATED TO TURBULENCE/UNSTEADY AIR (AIRSPEED INDICATOR BOUNCING). I THINK WE HAD 135 KTS; BELOW VREF OF 141 OR SO AND IN THE YELLOW BAND. CAPT QUICKLY RECOVERED AND WE LOST NO ALT. I FELT I SHOULD HAVE BEEN MORE ALERT AND WARNED HIM OF LOW AIRSPEED BUT I DID NOT SEE IT UNTIL THE SHAKER STARTED. WE ALSO THINK SLOW AUTOTHROTTLE RESPONSE WITH AIRPLANE AT GEAR DOWN AND FLAPS 25 THEN 15 MAY HAVE BEEN A FACTOR. AFTER ESTABLISHING COMS WE GOT VECTORED TO THE ILS/DME02 RWY 01 AND LANDED UNEVENTFULLY.
Data retrieved from NASA's ASRS site as of May 2009 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.