NTSB Identification: DEN86FA181.
The docket is stored on NTSB microfiche number 32557.
Accident occurred Saturday, June 28, 1986 in TOWNSEND, MT
Probable Cause Approval Date: 03/25/1988
Aircraft: PIPER PA-28-236, registration: N100WX
Injuries: 1 Fatal.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

ON 6/26/86, THE PLT & HIS WIFE HAD FLOWN FROM HELENA, MT. TO POWELL, WY, TO VISIT FAMILY & RELATIVES. ON THE DAY OF THE ACDNT, HE HAD CONSUMED ALCOHOLIC BEVERAGES. DESPITE PLEAS FM HIS WIFE NOT TO RETURN TO HELENA THAT EVENING, HE ELECTED TO FLY BACK. WHILE EN ROUTE, THERE WAS A CATASTROPHIC FAILURE OF THE ACFT; THE WRECKAGE WAS SCATTERED OVER A 1460' AREA.THE RGT WING & BOTH STABILATORS WERE FOUND APRX 750' FM THE MAIN WRECKAGE WITH EVIDENCE OF OVERLOAD FAILURE. THERE WAS EVIDENCE OF UPWARD DEFORMATION/FAILURE OF WINGS & DOWNWARD FAILURE OF THE STABILATORS. CAMPERS NEAR THE CRASH SITE RPRTDA MOONLESS, CLOUDY NGT WITH THUNDER & LIGHTNING IN THE AREA, BUT NO RAIN. APRX 60 MI WEST AT HELENA, THE 2350 MDT WX WAS, IN PART: 6500' OVERCAST, VIS 15 MI. ELEV OF THE CRASH SITE WAS APRX 6000'; ELEV OF THE WX STN WAS 3873'. THE PLT HAD ONLY 6 HRS OF NGT FLYING TIME (LAST NGT FLT WAS LOGGED ON 6/29/83) & ONLY 2.8 HRS OF INSTRUMENT TIME (LAST LOGGED ON 7/16/82). A CHECK OF THE PLT'S BLOOD SHOWED AN ALCOHOL LVL OF 0.115%.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

JUDGMENT..POOR..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

IMPAIRMENT(ALCOHOL)..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

DESIGN STRESS LIMITS OF AIRCRAFT..EXCEEDED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

AIRCRAFT HANDLING..NOT MAINTAINED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

SPATIAL DISORIENTATION..PILOT IN COMMAND




Contributing Factors

LIGHT CONDITION..DARK NIGHT


Contributing Factors

LACK OF TOTAL EXPERIENCE..PILOT IN COMMAND


Contributing Factors

LACK OF TOTAL EXPERIENCE IN TYPE OPERATION..PILOT IN COMMAND


Contributing Factors

LACK OF RECENT EXPERIENCE IN TYPE OPERATION..PILOT IN COMMAND

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