B757 crew had flaps lockout with asymmetry protection.

Attributes
ACN	445700
Time
Date	199908
Day	Tue
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : jfk.airport
State Reference	NY
Altitude	msl single value : 2000
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Controlling Facilities	tracon : n90.tracon
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 4l other
Flight Phase	descent : approach
Route In Use	approach : visual approach : instrument precision arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 150 flight time total : 16000 flight time type : 3000
ASRS Report	445700
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance controller : provided flight assist flight crew : landed in emergency condition
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

On approach (after all night flight from las-jfk), when lowering flaps to 1 degree, we had a trailing edge flap disagreement fault light, which prevented the flaps from coming out. We were on a 10 mi final approach to runway 4L at jfk, and requested vectors back out to give us time to run through the alternate flap checklist. During vectors, we were able to lower the flaps to 20 degrees (as called for by the abnormal checklist), and landed on runway 4L uneventfully. We did not declare an emergency, but the port authority/authorized called out the trucks anyway, as per their procedures. I did not see the need, however. During the vectoring, there was some confusion as we were having trouble executing all phases of all checklists efficiently as we were both fatigued from having flown all night. All operations were safe, but the workload was high.

Original NASA ASRS Text

Title: B757 CREW HAD FLAPS LOCKOUT WITH ASYMMETRY PROTECTION.

Narrative: ON APCH (AFTER ALL NIGHT FLT FROM LAS-JFK), WHEN LOWERING FLAPS TO 1 DEG, WE HAD A TRAILING EDGE FLAP DISAGREEMENT FAULT LIGHT, WHICH PREVENTED THE FLAPS FROM COMING OUT. WE WERE ON A 10 MI FINAL APCH TO RWY 4L AT JFK, AND REQUESTED VECTORS BACK OUT TO GIVE US TIME TO RUN THROUGH THE ALTERNATE FLAP CHKLIST. DURING VECTORS, WE WERE ABLE TO LOWER THE FLAPS TO 20 DEGS (AS CALLED FOR BY THE ABNORMAL CHKLIST), AND LANDED ON RWY 4L UNEVENTFULLY. WE DID NOT DECLARE AN EMER, BUT THE PORT AUTH CALLED OUT THE TRUCKS ANYWAY, AS PER THEIR PROCS. I DID NOT SEE THE NEED, HOWEVER. DURING THE VECTORING, THERE WAS SOME CONFUSION AS WE WERE HAVING TROUBLE EXECUTING ALL PHASES OF ALL CHKLISTS EFFICIENTLY AS WE WERE BOTH FATIGUED FROM HAVING FLOWN ALL NIGHT. ALL OPS WERE SAFE, BUT THE WORKLOAD WAS HIGH.

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.