 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Aircraft equipment problem with split flaps mandates radar vectoring for checklist use to adjust to the malfunction.
| Attributes | |
| ACN | 250149 |
| Time | |
| Date | 199308 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : sss |
| State Reference | FO |
| Altitude | msl bound lower : 3000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : sss |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 4 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach landing : go around |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 17000 flight time type : 4000 |
| ASRS Report | 250149 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : overcame equipment problem other other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
When extending flaps for approach confign, noticed split flap condition (inboard trailing edge flaps stuck at 0). Outboard trailing edge flaps normal. Asked for vectors from approach control to 'buy time' to accomplish split flap/alternate leading edge device extension checklists. First officer flying. Captain -- so accomplished checklists. Unable to extend inboard trailing edge flaps by alternate method. Landed on runway 20R with leading edge devicesecond officerutboard trailing edge flaps normal. Problem was discovered by amber leading edge annunciator light 'on,' then noticed inboard trailing edge flap needle at 0 when flap handle positioned to 10 (disagreement). Also amber lights at so panel indicating leading edge devices not extended when called for. Crew perceived the problem due to flight deck indications -- used checklists to reconfigure aircraft -- landed without further incident. Higher approach and landing speeds as called for in abnormal procedure.
Original NASA ASRS Text
Title: ACFT EQUIP PROB WITH SPLIT FLAPS MANDATES RADAR VECTORING FOR CHKLIST USE TO ADJUST TO THE MALFUNCTION.
Narrative: WHEN EXTENDING FLAPS FOR APCH CONFIGN, NOTICED SPLIT FLAP CONDITION (INBOARD TRAILING EDGE FLAPS STUCK AT 0). OUTBOARD TRAILING EDGE FLAPS NORMAL. ASKED FOR VECTORS FROM APCH CTL TO 'BUY TIME' TO ACCOMPLISH SPLIT FLAP/ALTERNATE LEADING EDGE DEVICE EXTENSION CHKLISTS. FO FLYING. CAPT -- SO ACCOMPLISHED CHKLISTS. UNABLE TO EXTEND INBOARD TRAILING EDGE FLAPS BY ALTERNATE METHOD. LANDED ON RWY 20R WITH LEADING EDGE DEVICES/OUTBOARD TRAILING EDGE FLAPS NORMAL. PROB WAS DISCOVERED BY AMBER LEADING EDGE ANNUNCIATOR LIGHT 'ON,' THEN NOTICED INBOARD TRAILING EDGE FLAP NEEDLE AT 0 WHEN FLAP HANDLE POSITIONED TO 10 (DISAGREEMENT). ALSO AMBER LIGHTS AT SO PANEL INDICATING LEADING EDGE DEVICES NOT EXTENDED WHEN CALLED FOR. CREW PERCEIVED THE PROB DUE TO FLT DECK INDICATIONS -- USED CHKLISTS TO RECONFIGURE ACFT -- LANDED WITHOUT FURTHER INCIDENT. HIGHER APCH AND LNDG SPDS AS CALLED FOR IN ABNORMAL PROC.
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.