B737 flight crew encounters trw on ILS approach course above 3000 ft AGL and first officer announces...

Attributes
ACN	779555
Time
Date	200803
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : d10.tracon
State Reference	TX
Altitude	msl single value : 4000
Environment
Flight Conditions	IMC
Weather Elements	Turbulence Ice Windshear Thunderstorm Rain
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : d10.tracon
Operator	common carrier : air carrier
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : n/a
Flight Phase	descent : approach
Route In Use	approach : instrument precision
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	779555
Events
Anomaly	inflight encounter : weather inflight encounter : turbulence non adherence : company policies other anomaly
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Flight Crew Human Performance Weather
Primary Problem	Flight Crew Human Performance

Narrative:

Inbound to ZZZ; large thunderstorm cells developing over the field. Flaps 5 degrees and 4000 ft on the base turn; I mention my concern over the cells developing over the final approach course and my surprise to have not heard any deviations yet. Turn to final and trying to go to flaps 10 degrees. Idle power; on the descent path getting 10-20 KT gusts. I state that I can't get slow. Captain says just use the gear...a little early but sure. Gear down. I get slow enough for flaps 10 degrees; we are still on the normal descent and course for the ILS. At this time we hit large windshear +20 KTS on the nose. About 1/2 the wind would fade and another 20 KTS would hit again. Couldn't get slow enough for flaps 15 degrees. At this time; hit heavy rain showers; turbulence; and more windshear. I have no aircraft windshear advisory on the radar; but the tower calls windshear advisory of +20 KTS. Captain and I agree we are in that event. Still at idle; trying to get flaps 15 degrees; I state to the captain that this is way out of my comfort level and either he can take it or I am going around. Captain takes the aircraft. Calls for flaps 15 degrees...too fast...wait for speed get 15 KTS. Gust overspeed 15 KTS. Flaps 25 degrees; too fast...wait for speed limit and again gust overspeed. Flaps 30 degrees again too fast...wait for speed flaps 30 degrees and gust overspeed. About 300 ft or so we break out and it is clear on the airfield. Just light winds; no rain; and we land uneventfully. On rollout and clearing the runway while accomplishing the after landing checklist; I see the last 3 items on the checklist are still open. Taxiing to the gate we had some discussions about writing up the flaps -- flaps were written up at the gate. I called maintenance to notify them of the possible overspeed conditions on the flaps.

Original NASA ASRS Text

Title: B737 FLT CREW ENCOUNTERS TRW ON ILS APPROACH COURSE ABOVE 3000 FT AGL AND FO ANNOUNCES INTENT TO GAR. CAPT ASSUMES CONTROL AND LANDS AFTER SEVERAL FLAP OVER-SPEEDS. LANDING CHECKLIST IS NOT COMPLETED.

Narrative: INBOUND TO ZZZ; LARGE TSTM CELLS DEVELOPING OVER THE FIELD. FLAPS 5 DEGS AND 4000 FT ON THE BASE TURN; I MENTION MY CONCERN OVER THE CELLS DEVELOPING OVER THE FINAL APCH COURSE AND MY SURPRISE TO HAVE NOT HEARD ANY DEVS YET. TURN TO FINAL AND TRYING TO GO TO FLAPS 10 DEGS. IDLE PWR; ON THE DSCNT PATH GETTING 10-20 KT GUSTS. I STATE THAT I CAN'T GET SLOW. CAPT SAYS JUST USE THE GEAR...A LITTLE EARLY BUT SURE. GEAR DOWN. I GET SLOW ENOUGH FOR FLAPS 10 DEGS; WE ARE STILL ON THE NORMAL DSCNT AND COURSE FOR THE ILS. AT THIS TIME WE HIT LARGE WINDSHEAR +20 KTS ON THE NOSE. ABOUT 1/2 THE WIND WOULD FADE AND ANOTHER 20 KTS WOULD HIT AGAIN. COULDN'T GET SLOW ENOUGH FOR FLAPS 15 DEGS. AT THIS TIME; HIT HVY RAIN SHOWERS; TURB; AND MORE WINDSHEAR. I HAVE NO ACFT WINDSHEAR ADVISORY ON THE RADAR; BUT THE TWR CALLS WINDSHEAR ADVISORY OF +20 KTS. CAPT AND I AGREE WE ARE IN THAT EVENT. STILL AT IDLE; TRYING TO GET FLAPS 15 DEGS; I STATE TO THE CAPT THAT THIS IS WAY OUT OF MY COMFORT LEVEL AND EITHER HE CAN TAKE IT OR I AM GOING AROUND. CAPT TAKES THE ACFT. CALLS FOR FLAPS 15 DEGS...TOO FAST...WAIT FOR SPD GET 15 KTS. GUST OVERSPEED 15 KTS. FLAPS 25 DEGS; TOO FAST...WAIT FOR SPD LIMIT AND AGAIN GUST OVERSPEED. FLAPS 30 DEGS AGAIN TOO FAST...WAIT FOR SPD FLAPS 30 DEGS AND GUST OVERSPEED. ABOUT 300 FT OR SO WE BREAK OUT AND IT IS CLR ON THE AIRFIELD. JUST LIGHT WINDS; NO RAIN; AND WE LAND UNEVENTFULLY. ON ROLLOUT AND CLRING THE RWY WHILE ACCOMPLISHING THE AFTER LNDG CHKLIST; I SEE THE LAST 3 ITEMS ON THE CHKLIST ARE STILL OPEN. TAXIING TO THE GATE WE HAD SOME DISCUSSIONS ABOUT WRITING UP THE FLAPS -- FLAPS WERE WRITTEN UP AT THE GATE. I CALLED MAINT TO NOTIFY THEM OF THE POSSIBLE OVERSPEED CONDITIONS ON THE FLAPS.

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.

B737 flight crew encounters trw on ILS approach course above 3000 ft AGL and first officer announces intent to go around. Captain assumes control and lands after several flap over-speeds. Landing checklist is not completed.