B757 captain experiences a le slat disagree EICAS message when flaps are selected during approach. T...

Narrative:

As approach started slowing us on the arrival I asked for flaps 1 speed 210 KTS. The flap indicator stuck between 0 and 1 and we got a le slat disagree EICAS indication. The first officer got out and ran the checklist. We had to get out of the landing sequence as the checklist was taking a little longer than we thought it would. Approach gave us a left turn and got us right back in. We only needed about 5 more minutes. As per the checklist we landed with 20 flaps and a target speed of 155 KTS. Landing was exceptionally smooth and we continued to the gate leaving flaps and switches as they were for the checklist. Although the le slat disagree message was correct the mechanics could not duplicate the problem; but did say it had the same write up once before (last month). We flew the same plane two more legs with no problems.

Original NASA ASRS Text

Title: B757 Captain experiences a LE Slat Disagree EICAS message when flaps are selected during approach. The QRH is consulted prior to landing with flaps 20. Maintenance could not duplicate the problem on the ground; but indicated the aircraft had been written up for the same fault recently.

Narrative: As Approach started slowing us on the arrival I asked for flaps 1 speed 210 KTS. The flap indicator stuck between 0 and 1 and we got a LE SLAT DISAGREE EICAS indication. The First Officer got out and ran the checklist. We had to get out of the landing sequence as the checklist was taking a little longer than we thought it would. Approach gave us a left turn and got us right back in. We only needed about 5 more minutes. As per the checklist we landed with 20 flaps and a target speed of 155 KTS. Landing was exceptionally smooth and we continued to the gate leaving flaps and switches as they were for the checklist. Although the LE SLAT DISAGREE message was correct the mechanics could not duplicate the problem; but did say it had the same write up once before (last month). We flew the same plane two more legs with no problems.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	987191
Time
Date	201101
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	Flap/Slat Control System
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 210 Flight Crew Total 17000 Flight Crew Type 7000
Events
Anomaly	Aircraft Equipment Problem Critical

B757 captain experiences a le slat disagree EICAS message when flaps are selected during approach. The QRH is consulted prior to landing with flaps 20. Maintenance could not duplicate the problem on the ground; but indicated the aircraft had been written up for the same fault recently.