Drain mast damage discovered at ramp.

Attributes
ACN	492790
Time
Date	200011
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lga.airport
State Reference	NY
Altitude	agl single value : 50
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : lga.tower
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	ils localizer & glide slope : 22
Flight Phase	landing : roll
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 60 flight time total : 5000 flight time type : 600
ASRS Report	492790
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	inflight encounter : weather inflight encounter other non adherence : company policies other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : anomaly accepted none taken : detected after the fact
Consequence	Other
Supplementary
Problem Areas	Flight Crew Human Performance Weather
Primary Problem	Flight Crew Human Performance

Narrative:

Aircraft landing on runway 22 lga. Doing RNAV runway 22 approach then cleared for the visual. Had ILS on secondary flight plan tuned in, so I used that for guidance. We had gusty xwinds and I suspected possible local windshear conditions, therefore used flaps 3 degrees for landing according to procedure. Approach and landing was normal, on speed and not a hard landing, and no indication of windshear. After making a normal landing aircraft skipped back in the air and again made a normal landing. Upon landing there was a windshear indication on pfd, but no aural warning. At the gate a 1 inch square was found on the bottom of the aft drain mast, no other damage to aircraft. At this time I have no idea why the aircraft skipped. I can only think of 2 possibilities. Either the aircraft started to sink because of windshear and I rotated to stop the sink, but I don't think so because everything seemed normal to me, or the spoilers did not deploy because it detected windshear. At this time I have no idea what I could have done differently to change the outcome.

Original NASA ASRS Text

Title: DRAIN MAST DAMAGE DISCOVERED AT RAMP.

Narrative: ACFT LNDG ON RWY 22 LGA. DOING RNAV RWY 22 APCH THEN CLRED FOR THE VISUAL. HAD ILS ON SECONDARY FLT PLAN TUNED IN, SO I USED THAT FOR GUIDANCE. WE HAD GUSTY XWINDS AND I SUSPECTED POSSIBLE LCL WINDSHEAR CONDITIONS, THEREFORE USED FLAPS 3 DEGS FOR LNDG ACCORDING TO PROC. APCH AND LNDG WAS NORMAL, ON SPD AND NOT A HARD LNDG, AND NO INDICATION OF WINDSHEAR. AFTER MAKING A NORMAL LNDG ACFT SKIPPED BACK IN THE AIR AND AGAIN MADE A NORMAL LNDG. UPON LNDG THERE WAS A WINDSHEAR INDICATION ON PFD, BUT NO AURAL WARNING. AT THE GATE A 1 INCH SQUARE WAS FOUND ON THE BOTTOM OF THE AFT DRAIN MAST, NO OTHER DAMAGE TO ACFT. AT THIS TIME I HAVE NO IDEA WHY THE ACFT SKIPPED. I CAN ONLY THINK OF 2 POSSIBILITIES. EITHER THE ACFT STARTED TO SINK BECAUSE OF WINDSHEAR AND I ROTATED TO STOP THE SINK, BUT I DON'T THINK SO BECAUSE EVERYTHING SEEMED NORMAL TO ME, OR THE SPOILERS DID NOT DEPLOY BECAUSE IT DETECTED WINDSHEAR. AT THIS TIME I HAVE NO IDEA WHAT I COULD HAVE DONE DIFFERENTLY TO CHANGE THE OUTCOME.

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.