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B767-300 flight crew disconnects autothrottles in descent. When leveling they fail to arm autothrottles again and lose altitude and airspeed. Stick shaker activates.
| Attributes | |
| ACN | 413289 |
| Time | |
| Date | 199809 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : bda |
| State Reference | FO |
| Altitude | msl bound lower : 2800 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny tower : las |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Route In Use | enroute : atlantic |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 18000 flight time type : 5300 |
| ASRS Report | 413289 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other anomaly |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : became reoriented flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Flight was cleared by new york communication radio for ILS runway 30 approach to bermuda (txkf) to cross reef intersection inbound at 3000 ft. Bermuda radar was inoperative. Captain was flying aircraft with autoplt engaged and autothrottles were disconnected in descent (flight level change) as they had not responded fast enough moments earlier. First officer was on radio with bda operations regarding passenger problem at time of occurrence -- about 8 mins out. Speed bug was set at 190 KTS, flaps 15 degrees. Autoplt leveled aircraft at 3000 ft and seconds later I observed airspeed decaying through 145 KTS. I immediately applied maximum power and disconnected autoplt to initiate recovery. Stick shaker occurred briefly. Aircraft lost 180-200 ft altitude during recovery. There were no engine exceedances and lowest observed airspeed was 128-130 KTS. Aircraft weighed approximately 295000 pounds. Vref 30 was 140 KTS.
Original NASA ASRS Text
Title: B767-300 FLC DISCONNECTS AUTOTHROTTLES IN DSCNT. WHEN LEVELING THEY FAIL TO ARM AUTOTHROTTLES AGAIN AND LOSE ALT AND AIRSPD. STICK SHAKER ACTIVATES.
Narrative: FLT WAS CLRED BY NEW YORK COM RADIO FOR ILS RWY 30 APCH TO BERMUDA (TXKF) TO CROSS REEF INTXN INBOUND AT 3000 FT. BERMUDA RADAR WAS INOP. CAPT WAS FLYING ACFT WITH AUTOPLT ENGAGED AND AUTOTHROTTLES WERE DISCONNECTED IN DSCNT (FLT LEVEL CHANGE) AS THEY HAD NOT RESPONDED FAST ENOUGH MOMENTS EARLIER. FO WAS ON RADIO WITH BDA OPS REGARDING PAX PROB AT TIME OF OCCURRENCE -- ABOUT 8 MINS OUT. SPD BUG WAS SET AT 190 KTS, FLAPS 15 DEGS. AUTOPLT LEVELED ACFT AT 3000 FT AND SECONDS LATER I OBSERVED AIRSPD DECAYING THROUGH 145 KTS. I IMMEDIATELY APPLIED MAX PWR AND DISCONNECTED AUTOPLT TO INITIATE RECOVERY. STICK SHAKER OCCURRED BRIEFLY. ACFT LOST 180-200 FT ALT DURING RECOVERY. THERE WERE NO ENG EXCEEDANCES AND LOWEST OBSERVED AIRSPD WAS 128-130 KTS. ACFT WEIGHED APPROX 295000 LBS. VREF 30 WAS 140 KTS.
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.