Small aircraft on ILS approach hits trees after OM.

Attributes
ACN	250998
Time
Date	199308
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : tvc
State Reference	MI
Altitude	agl bound lower : 100 agl bound upper : 100
Environment
Flight Conditions	Marginal
Light	Night
Aircraft 1
Controlling Facilities	tower : tvc
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : private
Experience	flight time last 90 days : 6 flight time total : 530 flight time type : 6
ASRS Report	250998
Person 2
Affiliation	Other
Function	observation : passenger
Qualification	other other : other
Events
Anomaly	conflict : ground critical other anomaly other other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	other
Supplementary
Primary Problem	Weather
Air Traffic Incident	Pilot Deviation

Narrative:

Aircraft en route iphn (port huron, mi) to htl (houghton lake, mi). Thunderstorm at htl required diversion to tvc. ZMP cleared aircraft to ILS runway 26 approach. Tower contact was established. Aircraft established on localizer. Reported passing OM (gwinn). Inside OM aircraft deflected below GS by winds. Before recovery, aircraft passed through tree tops. Landing was accomplished normally on runway 26 (tvc) without further difficulty. Inspection of aircraft showed skin damage to right wing forward edge, left wing tip skin wrinkle, right elevator skin wrinkling. Pilot was attempting to correct altitude and was watching panel instruments. There was ground contact (passenger could see ground) at time of incident and saw the trees. Pilot then made sharp correction and just hit the tree tops. Bad WX had made passenger very nervous and she was crying. This was distracting. Another factor was the WX which was unanticipated. Neither ATC nor saginaw (mbs) approach could detect WX on their respective radars and NWS had earlier advised that severe WX had passed by htl earlier, moving out of line of flight.

Original NASA ASRS Text

Title: SMA ON ILS APCH HITS TREES AFTER OM.

Narrative: ACFT ENRTE IPHN (PORT HURON, MI) TO HTL (HOUGHTON LAKE, MI). TSTM AT HTL REQUIRED DIVERSION TO TVC. ZMP CLRED ACFT TO ILS RWY 26 APCH. TWR CONTACT WAS ESTABLISHED. ACFT ESTABLISHED ON LOC. RPTED PASSING OM (GWINN). INSIDE OM ACFT DEFLECTED BELOW GS BY WINDS. BEFORE RECOVERY, ACFT PASSED THROUGH TREE TOPS. LNDG WAS ACCOMPLISHED NORMALLY ON RWY 26 (TVC) WITHOUT FURTHER DIFFICULTY. INSPECTION OF ACFT SHOWED SKIN DAMAGE TO R WING FORWARD EDGE, L WING TIP SKIN WRINKLE, R ELEVATOR SKIN WRINKLING. PLT WAS ATTEMPTING TO CORRECT ALT AND WAS WATCHING PANEL INSTS. THERE WAS GND CONTACT (PAX COULD SEE GND) AT TIME OF INCIDENT AND SAW THE TREES. PLT THEN MADE SHARP CORRECTION AND JUST HIT THE TREE TOPS. BAD WX HAD MADE PAX VERY NERVOUS AND SHE WAS CRYING. THIS WAS DISTRACTING. ANOTHER FACTOR WAS THE WX WHICH WAS UNANTICIPATED. NEITHER ATC NOR SAGINAW (MBS) APCH COULD DETECT WX ON THEIR RESPECTIVE RADARS AND NWS HAD EARLIER ADVISED THAT SEVERE WX HAD PASSED BY HTL EARLIER, MOVING OUT OF LINE OF FLT.

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.