 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
An medium large transport transport on approach had amber leading edge device position indicating disagreement light illuminated and slat extend light not illuminated. Abnormal extension verified by manually flying aircraft.
| Attributes | |
| ACN | 366058 |
| Time | |
| Date | 199704 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : tys |
| State Reference | TN |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : tys |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 185 flight time total : 16000 flight time type : 11000 |
| ASRS Report | 366058 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa other other : unspecified cockpit |
| Resolutory Action | flight crew : declared emergency other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Beginning visual approach to runway 23L, extended slats and flaps with autoplt engaged. Observed slat disagreement light stayed on and blue slat extend light did not illuminate. Also observed windshear annunciator light but no aural warnings or pronounced change in aircraft attitude. Experienced stall stick shaker in level flight at higher than normally expected speed. Captain commanded a go around and asked ATC for a vector to sort out problem. Crew verified abnormal slat deployment by manual control of aircraft and elected to make no slat/flap only landing after reviewing company abnormal procedure manual. Landing was successful and fire trucks released.
Original NASA ASRS Text
Title: AN MLG TRANSPORT ON APCH HAD AMBER LEADING EDGE DEVICE POS INDICATING DISAGREEMENT LIGHT ILLUMINATED AND SLAT EXTEND LIGHT NOT ILLUMINATED. ABNORMAL EXTENSION VERIFIED BY MANUALLY FLYING ACFT.
Narrative: BEGINNING VISUAL APCH TO RWY 23L, EXTENDED SLATS AND FLAPS WITH AUTOPLT ENGAGED. OBSERVED SLAT DISAGREEMENT LIGHT STAYED ON AND BLUE SLAT EXTEND LIGHT DID NOT ILLUMINATE. ALSO OBSERVED WINDSHEAR ANNUNCIATOR LIGHT BUT NO AURAL WARNINGS OR PRONOUNCED CHANGE IN ACFT ATTITUDE. EXPERIENCED STALL STICK SHAKER IN LEVEL FLT AT HIGHER THAN NORMALLY EXPECTED SPD. CAPT COMMANDED A GAR AND ASKED ATC FOR A VECTOR TO SORT OUT PROB. CREW VERIFIED ABNORMAL SLAT DEPLOYMENT BY MANUAL CTL OF ACFT AND ELECTED TO MAKE NO SLAT/FLAP ONLY LNDG AFTER REVIEWING COMPANY ABNORMAL PROC MANUAL. LNDG WAS SUCCESSFUL AND FIRE TRUCKS RELEASED.
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.