 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
When the first officer of a B727 used speed brakes to make an altitude and speed restr fix, he lost control of the aircraft when the aircraft rolled violently until speed brakes were retracted. Consequently, the speed restr was not met. The speed brakes were not used again for the rest of that flight.
| Attributes | |
| ACN | 406938 |
| Time | |
| Date | 199806 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : smo airport : mex |
| State Reference | FO |
| Altitude | msl bound lower : 13000 msl bound upper : 14000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : mex tower : ord |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : flight engineer pilot : commercial pilot : cfi pilot : atp pilot : instrument |
| Experience | flight time last 90 days : 125 flight time total : 9000 flight time type : 900 |
| ASRS Report | 406938 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : clearance other anomaly other anomaly other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | none taken : insufficient time other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Descending into mex, was issued a descent clearance to cross mateo at 14000 ft, 250 KTS. The first officer was the PF. To comply, the first officer used the speed brake. Upon deployment, the aircraft rolled violently to the right. The crew regained control of the aircraft, but was unable to make the 250 KT speed restr. During this event, mex approach changed the leveloff altitude to 13000 ft, then asked for our IAS which was 295 KTS, and which the crew responded. As a result, the speed brake was not used again. The remainder of the flight was uneventful.
Original NASA ASRS Text
Title: WHEN THE FO OF A B727 USED SPD BRAKES TO MAKE AN ALT AND SPD RESTR FIX, HE LOST CTL OF THE ACFT WHEN THE ACFT ROLLED VIOLENTLY UNTIL SPD BRAKES WERE RETRACTED. CONSEQUENTLY, THE SPD RESTR WAS NOT MET. THE SPD BRAKES WERE NOT USED AGAIN FOR THE REST OF THAT FLT.
Narrative: DSNDING INTO MEX, WAS ISSUED A DSCNT CLRNC TO CROSS MATEO AT 14000 FT, 250 KTS. THE FO WAS THE PF. TO COMPLY, THE FO USED THE SPD BRAKE. UPON DEPLOYMENT, THE ACFT ROLLED VIOLENTLY TO THE R. THE CREW REGAINED CTL OF THE ACFT, BUT WAS UNABLE TO MAKE THE 250 KT SPD RESTR. DURING THIS EVENT, MEX APCH CHANGED THE LEVELOFF ALT TO 13000 FT, THEN ASKED FOR OUR IAS WHICH WAS 295 KTS, AND WHICH THE CREW RESPONDED. AS A RESULT, THE SPD BRAKE WAS NOT USED AGAIN. THE REMAINDER OF THE FLT WAS UNEVENTFUL.
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.