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A fatigued crew descending into rjaa was issued a runway change and the captain; while getting the approach chart; engaged the autopilot; but not autothrottles; so the aircraft decelerated to 10 KTS below clean maneuver speed before recovery was initiated.
| Attributes | |
| ACN | 1008146 |
| Time | |
| Date | 201205 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | RJAA.Airport |
| State Reference | FO |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Widebody Transport |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Autothrottle/Speed Control |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 200 Flight Crew Total 14000 Flight Crew Type 4000 |
| Person 2 | |
| Function | Relief Pilot Pilot Not Flying |
| Experience | Flight Crew Last 90 Days 300 Flight Crew Total 14000 Flight Crew Type 5200 |
| Events | |
| Anomaly | Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Published Material / Policy Deviation - Speed All Types |
Narrative:
While being vectored for approach; I was hand flying with the autothrottles off. As I was leveling at 9;000 and 240 KTS; we were given a runway change. I engaged the autopilot but not the autothrottles and went to the flight bag. The copilot soon asked what was going on with the airspeed; as we were decelerating through 170 KTS; whereupon I pushed throttles to full; turned off the autopilot and lowered the nose. We lost about 80 ft and then gained the same before stabilizing again with autopilot and autothrottles back on. I'm sure fatigue from a long flight and coming off last break was a factor; but a poor excuse for not engaging the autothrottles and worse; not monitoring the aircraft. I ashamed of my performance; thankfully; the copilot saved the day.
Original NASA ASRS Text
Title: A fatigued crew descending into RJAA was issued a runway change and the Captain; while getting the approach chart; engaged the autopilot; but not autothrottles; so the aircraft decelerated to 10 KTS below clean maneuver speed before recovery was initiated.
Narrative: While being vectored for approach; I was hand flying with the autothrottles off. As I was leveling at 9;000 and 240 KTS; we were given a runway change. I engaged the autopilot but not the autothrottles and went to the flight bag. The Copilot soon asked what was going on with the airspeed; as we were decelerating through 170 KTS; whereupon I pushed throttles to full; turned off the autopilot and lowered the nose. We lost about 80 FT and then gained the same before stabilizing again with autopilot and autothrottles back on. I'm sure fatigue from a long flight and coming off last break was a factor; but a poor excuse for not engaging the autothrottles and worse; not monitoring the aircraft. I ashamed of my performance; thankfully; the copilot saved the day.
Data retrieved from NASA's ASRS site as of July 2013 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.