3 aircraft deal with windshear at mht.

Attributes
ACN	457853
Time
Date	199912
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mht.airport
State Reference	NH
Environment
Flight Conditions	VMC
Weather Elements	Windshear Turbulence
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mht.tower
Operator	common carrier : air carrier
Make Model Name	B737-200
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial climbout : takeoff
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : mht.tower
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach landing : roll
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : instrument pilot : cfi pilot : atp pilot : commercial
Experience	flight time last 90 days : 120 flight time total : 10000 flight time type : 120
ASRS Report	457853
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : multi engine pilot : instrument
Experience	flight time last 90 days : 180 flight time total : 6100 flight time type : 600
ASRS Report	457984
Events
Anomaly	inflight encounter : turbulence inflight encounter : weather inflight encounter other
Independent Detector	aircraft equipment other aircraft equipment : windshear warning system other flight crewa other flight crewb other other : 5
Resolutory Action	controller : issued advisory flight crew : took precautionary avoidance action other
Supplementary
Problem Areas	Environmental Factor Weather
Primary Problem	Environmental Factor

Narrative:

Received complete WX briefing including PIREPS prior to takeoff. Aircraft (DC9) landing on same runway (runway 35) reported +/-10 KTS at several altitudes below 1000 ft AGL. Strong cold front had passed through during the night associated with a low to the north. Gusty winds and moderate with a possibility of severe turbulence below 8000 ft MSL was forecast. Initial altitude was 3000 ft and I requested 10000 ft for a maximum climb to smooth air as soon as possible. Departure briefing was extensive including the possibility of windshear. Maximum takeoff thrust, flaps 5 degrees, greater than or equal to 1.4 EPR prior to release of brakes, reduced V1 (7001 ft runway). Delayed rotation and recovery procedures. Takeoff roll was smooth as was rotation. Just as the mains cleared the runway, the red windshear annunciator lights illuminated (yellow never illuminated) and the aural 'windshear' warning was heard. Greater than 20 KTS loss in airspeed was noted. In strict compliance with prescribed recovery technique, firewall thrust was applied, the nose was pitched up to approximately 20 degrees and the aircraft remained in existing confign until such time when a greater than 2000 FPM, steady rate of climb was attained. Clean-up and power reduction then followed. A complete PIREP was transmitted after all checklists were complete and engine operation was assessed.

Original NASA ASRS Text

Title: 3 ACFT DEAL WITH WINDSHEAR AT MHT.

Narrative: RECEIVED COMPLETE WX BRIEFING INCLUDING PIREPS PRIOR TO TKOF. ACFT (DC9) LNDG ON SAME RWY (RWY 35) RPTED +/-10 KTS AT SEVERAL ALTS BELOW 1000 FT AGL. STRONG COLD FRONT HAD PASSED THROUGH DURING THE NIGHT ASSOCIATED WITH A LOW TO THE N. GUSTY WINDS AND MODERATE WITH A POSSIBILITY OF SEVERE TURB BELOW 8000 FT MSL WAS FORECAST. INITIAL ALT WAS 3000 FT AND I REQUESTED 10000 FT FOR A MAX CLB TO SMOOTH AIR ASAP. DEP BRIEFING WAS EXTENSIVE INCLUDING THE POSSIBILITY OF WINDSHEAR. MAX TKOF THRUST, FLAPS 5 DEGS, GREATER THAN OR EQUAL TO 1.4 EPR PRIOR TO RELEASE OF BRAKES, REDUCED V1 (7001 FT RWY). DELAYED ROTATION AND RECOVERY PROCS. TKOF ROLL WAS SMOOTH AS WAS ROTATION. JUST AS THE MAINS CLRED THE RWY, THE RED WINDSHEAR ANNUNCIATOR LIGHTS ILLUMINATED (YELLOW NEVER ILLUMINATED) AND THE AURAL 'WINDSHEAR' WARNING WAS HEARD. GREATER THAN 20 KTS LOSS IN AIRSPD WAS NOTED. IN STRICT COMPLIANCE WITH PRESCRIBED RECOVERY TECHNIQUE, FIREWALL THRUST WAS APPLIED, THE NOSE WAS PITCHED UP TO APPROX 20 DEGS AND THE ACFT REMAINED IN EXISTING CONFIGN UNTIL SUCH TIME WHEN A GREATER THAN 2000 FPM, STEADY RATE OF CLB WAS ATTAINED. CLEAN-UP AND PWR REDUCTION THEN FOLLOWED. A COMPLETE PIREP WAS XMITTED AFTER ALL CHKLISTS WERE COMPLETE AND ENG OP WAS ASSESSED.

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.