Air carrier large transport tail skid strike after landing. Flight crew says late automatic spoiler activation after a bounced landing caused the problem.

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Attributes
ACN	89114
Time
Date	198806
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : phx
State Reference	AZ
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sdf
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	landing other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp pilot : commercial pilot : private
Experience	flight time last 90 days : 210 flight time total : 14000 flight time type : 12500
ASRS Report	89114
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : atp pilot : commercial
Experience	flight time last 90 days : 300 flight time total : 16250
ASRS Report	89113
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

After a normal approach (runway 26R, automatic speed brake armed as per flight manual), T/D occurred about 1500' down the runway. Aircraft skipped slightly (1 or 2' in air), then the automatic spoilers deployed causing aircraft to sink rapidly and T/D firmly. About 15 mins later the second officer found the tail skid had been compressed. This was caused by the late and untimely automatic deployment of the ground spoilers. I have seen this occur many times in the past. I have also seen these automatic spoilers work perfectly. Since pilots cannot count on this automatic procedure, I recommend the following: deactivate all large transport automatic spoilers (I believe the only operational penalty is less landing weight on some wet runways), and change flight manuals and training procedures to the original mfr's speed brake procedure upon T/D. This will also standardize the procedure for all model large transport's in an operator's fleet.

Original NASA ASRS Text

Title: ACR LGT TAIL SKID STRIKE AFTER LNDG. FLT CREW SAYS LATE AUTO SPOILER ACTIVATION AFTER A BOUNCED LNDG CAUSED THE PROBLEM.

Narrative: AFTER A NORMAL APCH (RWY 26R, AUTO SPD BRAKE ARMED AS PER FLT MANUAL), T/D OCCURRED ABOUT 1500' DOWN THE RWY. ACFT SKIPPED SLIGHTLY (1 OR 2' IN AIR), THEN THE AUTO SPOILERS DEPLOYED CAUSING ACFT TO SINK RAPIDLY AND T/D FIRMLY. ABOUT 15 MINS LATER THE S/O FOUND THE TAIL SKID HAD BEEN COMPRESSED. THIS WAS CAUSED BY THE LATE AND UNTIMELY AUTOMATIC DEPLOYMENT OF THE GND SPOILERS. I HAVE SEEN THIS OCCUR MANY TIMES IN THE PAST. I HAVE ALSO SEEN THESE AUTO SPOILERS WORK PERFECTLY. SINCE PLTS CANNOT COUNT ON THIS AUTO PROC, I RECOMMEND THE FOLLOWING: DEACTIVATE ALL LGT AUTO SPOILERS (I BELIEVE THE ONLY OPERATIONAL PENALTY IS LESS LNDG WT ON SOME WET RWYS), AND CHANGE FLT MANUALS AND TRNING PROCS TO THE ORIGINAL MFR'S SPD BRAKE PROC UPON T/D. THIS WILL ALSO STANDARDIZE THE PROC FOR ALL MODEL LGT'S IN AN OPERATOR'S FLEET.

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