B757 flight crew reports flap disagree at flaps 20 position during approach. Flight is continued to ...

Attributes
ACN	812702
Time
Date	200811
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	IL
Altitude	agl single value : 1200
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tower : zzz.tower
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 15000 flight time type : 500
ASRS Report	812702
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : flight engineer pilot : cfi pilot : atp pilot : commercial
Experience	flight time last 90 days : 150 flight time total : 8750 flight time type : 4850
ASRS Report	812705
Events
Anomaly	aircraft equipment problem : less severe non adherence : company policies
Independent Detector	aircraft equipment other aircraft equipment : flap disagree other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	other
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

We were on approach to ZZZ; cleared to land; first officer flying. We had flaps 20 degrees. First officer called flaps 25 degrees. I moved flap handle from 20 degrees toward 25 degrees and as I did so; I sneezed and jerked the flap handle slightly forward but placed it in the 25 degree detent. The first officer called flaps 30 degrees and I moved the flap handle to 30 degree detent. My eyes were watery from sneezing and I wiped them clear. I checked the flap indicator and saw the flap needles both just beyond the 20 degree markings. Just at this time we get a 'too low flaps' warnings. The first officer asks if I want him to go-around and I told him to continue. I moved the flap handle to the 20 degree detent; got a reference speed for 20 degrees flaps; and disarmed the aural warning; and landed without incident. I did not declare an emergency. I should have. Even though we landed with 20 degrees flaps as the QRH said to do; we should have went around and ran the QRH checklist thoroughly. Supplemental information from acn 812705: I; the copilot (PF); requested selection of flaps 25 degrees at approximately 2300 ft. The captain (PNF) sneezed while selecting flaps 25 degrees and the gauges didn't go to 25 degrees -- also; a disagreement light came on. The captain then moved the flap lever from 25 degrees to 20 degrees to 25 degrees; nothing had changed. I; the copilot (PF); said 'leave the lever there at 25 degrees' and asked if he would like to accomplish go around/QRH/abnormal flap checklist. The captain (PNF) told me not to do a go around; continue to land and use 20 degrees reference speeds. In obeying the captain's orders; I proceeded to land the aircraft. Subsequently; around 800 ft; had a GPWS warning/flaps sounded. The GPWS switch was pushed to cancel the sound. We continued and landed safely. Captain (PNF) chose not to use QRH/abnormal checklist for safety of landing because flaps between 20-25 degrees; not to do a go around in case of overspd of flaps. The GPWS warning would not have gone off with the execution of the checklist. An emergency was not declared to tower and should have. Upon gate arrival; maintenance met the aircraft; was advised by the captain of the occurrence; and was placed in the logbook.

Original NASA ASRS Text

Title: B757 FLIGHT CREW REPORTS FLAP DISAGREE AT FLAPS 20 POSITION DURING APPROACH. FLIGHT IS CONTINUED TO LANDING BY FIRST OFFICER AT CAPTAIN'S BEHEST WITHOUT REFERRING TO QRH.

Narrative: WE WERE ON APCH TO ZZZ; CLRED TO LAND; FO FLYING. WE HAD FLAPS 20 DEGS. FO CALLED FLAPS 25 DEGS. I MOVED FLAP HANDLE FROM 20 DEGS TOWARD 25 DEGS AND AS I DID SO; I SNEEZED AND JERKED THE FLAP HANDLE SLIGHTLY FORWARD BUT PLACED IT IN THE 25 DEG DETENT. THE FO CALLED FLAPS 30 DEGS AND I MOVED THE FLAP HANDLE TO 30 DEG DETENT. MY EYES WERE WATERY FROM SNEEZING AND I WIPED THEM CLEAR. I CHKED THE FLAP INDICATOR AND SAW THE FLAP NEEDLES BOTH JUST BEYOND THE 20 DEG MARKINGS. JUST AT THIS TIME WE GET A 'TOO LOW FLAPS' WARNINGS. THE FO ASKS IF I WANT HIM TO GO-AROUND AND I TOLD HIM TO CONTINUE. I MOVED THE FLAP HANDLE TO THE 20 DEG DETENT; GOT A REF SPD FOR 20 DEGS FLAPS; AND DISARMED THE AURAL WARNING; AND LANDED WITHOUT INCIDENT. I DID NOT DECLARE AN EMER. I SHOULD HAVE. EVEN THOUGH WE LANDED WITH 20 DEGS FLAPS AS THE QRH SAID TO DO; WE SHOULD HAVE WENT AROUND AND RAN THE QRH CHKLIST THOROUGHLY. SUPPLEMENTAL INFO FROM ACN 812705: I; THE COPLT (PF); REQUESTED SELECTION OF FLAPS 25 DEGS AT APPROX 2300 FT. THE CAPT (PNF) SNEEZED WHILE SELECTING FLAPS 25 DEGS AND THE GAUGES DIDN'T GO TO 25 DEGS -- ALSO; A DISAGREEMENT LIGHT CAME ON. THE CAPT THEN MOVED THE FLAP LEVER FROM 25 DEGS TO 20 DEGS TO 25 DEGS; NOTHING HAD CHANGED. I; THE COPLT (PF); SAID 'LEAVE THE LEVER THERE AT 25 DEGS' AND ASKED IF HE WOULD LIKE TO ACCOMPLISH GAR/QRH/ABNORMAL FLAP CHKLIST. THE CAPT (PNF) TOLD ME NOT TO DO A GAR; CONTINUE TO LAND AND USE 20 DEGS REF SPDS. IN OBEYING THE CAPT'S ORDERS; I PROCEEDED TO LAND THE ACFT. SUBSEQUENTLY; AROUND 800 FT; HAD A GPWS WARNING/FLAPS SOUNDED. THE GPWS SWITCH WAS PUSHED TO CANCEL THE SOUND. WE CONTINUED AND LANDED SAFELY. CAPT (PNF) CHOSE NOT TO USE QRH/ABNORMAL CHKLIST FOR SAFETY OF LNDG BECAUSE FLAPS BTWN 20-25 DEGS; NOT TO DO A GAR IN CASE OF OVERSPD OF FLAPS. THE GPWS WARNING WOULD NOT HAVE GONE OFF WITH THE EXECUTION OF THE CHKLIST. AN EMER WAS NOT DECLARED TO TWR AND SHOULD HAVE. UPON GATE ARR; MAINT MET THE ACFT; WAS ADVISED BY THE CAPT OF THE OCCURRENCE; AND WAS PLACED IN THE LOGBOOK.

Data retrieved from NASA's ASRS site as of May 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.

B757 flight crew reports flap disagree at flaps 20 position during approach. Flight is continued to landing by first officer at captain's behest without referring to QRH.