<< >> NASA ASRS Report 754361, September 2007

B767 captain reports trailing edge flap and leading edge slat disagreement when flap lever moved from 20 degrees to 25 degrees. An emergency is declared and checklists complied with before a flaps 20 degree landing ensues.

Attributes
ACN	754361
Time
Date	200709
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 1500
Aircraft 1
Controlling Facilities	tower : zzz.tower
Operator	common carrier : air carrier
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 200 flight time total : 12000 flight time type : 5000
ASRS Report	754361
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	aircraft equipment other aircraft equipment : eicas other flight crewa
Resolutory Action	controller : issued new clearance flight crew : declared emergency flight crew : executed go around flight crew : overcame equipment problem
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Descending on the GS on the visual with gear and final descent checklist complete; we selected flaps 25 degrees and got 2 EICAS messages: 'trailing edge flap disagreement' and 'leading edge slat disagreement.' we elected to go around and the tower gave us an altitude and heading. At 3000 ft we completed the appropriate irregular checklists; declared an emergency; and asked for equipment to stand by. We sent an ACARS message to dispatch. We landed in accordance with flaps 20 degrees reference plus wind correction with no difficulties and taxied to the gate.

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Original NASA ASRS Text

Title: B767 CAPT RPTS TRAILING EDGE FLAP AND LEADING EDGE SLAT DISAGREEMENT WHEN FLAP LEVER MOVED FROM 20 DEGS TO 25 DEGS. AN EMER IS DECLARED AND CHKLISTS COMPLIED WITH BEFORE A FLAPS 20 DEG LNDG ENSUES.

Narrative: DSNDING ON THE GS ON THE VISUAL WITH GEAR AND FINAL DSCNT CHKLIST COMPLETE; WE SELECTED FLAPS 25 DEGS AND GOT 2 EICAS MESSAGES: 'TRAILING EDGE FLAP DISAGREEMENT' AND 'LEADING EDGE SLAT DISAGREEMENT.' WE ELECTED TO GO AROUND AND THE TWR GAVE US AN ALT AND HDG. AT 3000 FT WE COMPLETED THE APPROPRIATE IRREGULAR CHKLISTS; DECLARED AN EMER; AND ASKED FOR EQUIP TO STAND BY. WE SENT AN ACARS MESSAGE TO DISPATCH. WE LANDED IN ACCORDANCE WITH FLAPS 20 DEGS REF PLUS WIND CORRECTION WITH NO DIFFICULTIES AND TAXIED TO THE GATE.

Data retrieved from NASA's ASRS site as of January 2009 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.