# NTSB CHI94LA255: Piper PA-32-300, N8144Y, Marshalltown, IA, July 29, 1994 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: July 29, 1994, 14:50 local (19:50 UTC) - Place: Marshalltown, IA - Coordinates: 42.030769, -92.909553 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=42.0308&lon=-92.9096&mi=10 - Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report February 24, 1995 - Report: Approved by Office Director - NTSB case key (mKey): 9617 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI94LA255 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/9617/pdf - Page: https://openairdocs.org/ntsb/CHI94LA255 ## Probable cause A PARTIAL LOSS OF ENGINE POWER FOR UNDETERMINED REASONS. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, takeoff - initial climb - reason for occurrence undetermined (cause) - Forced landing, descent - emergency - In flight collision with terrain/water, descent - emergency - terrain condition - ditch ## Analysis THE PILOT REPORTED A PARTIAL POWER LOSS AND REDUCTION IN CLIMB AIRSPEED SHORTLY AFTER TAKEOFF. SHE SAID SHE LEVELED THE AIRPLANE'S ATTITUDE AND REGAINED ITS ORIGINAL CLIMB SPEED. SHE SAID THAT 'THE LEVEL ATTITUDE...SEEMED TO STABILIZE EVERYTHING.' BECAUSE OF THIS THE PILOT SAID SHE DECIDED TO LAND ON A CROSS RUNWAY. DURING THE TURN THE PILOT REPORTED A FURTHER POWER LOSS. SHE SAID SHE DECIDED TO LAND ON A GRASSY STRIP LOCATED BETWEEN A CORN FIELD AND DITCH. SHORTLY AFTER TOUCH DOWN THE AIRPLANE'S RIGHT MAIN LANDING GEAR DROPPED INTO A DITCH AND BROKE OFF. THE ON-SCENE INVESTIGATION AND FUEL SYSTEM FLOW CHECK REVEALED NO ANOMALIES THAT WOULD PREVENT THE ENGINE FROM DEVELOPING POWER. ## Factual narrative On July 29, 1994, at 1450 central daylight time (CDT), a Piper PA-32-300, N8144Y, registered to Ardis M. Luthe of Marshalltown, Iowa, and piloted by a commercially certificated pilot, was substantially damaged during a collision with the ground following an off airport landing. Visual meteorological conditions prevailed at the time of the accident. The 14 CFR Part 91 flight was not operating on a flight plan. The pilot and passenger reported no injuries. The flight departed Marshalltown, Iowa, at 1445 CDT. According to the pilot's written statement on NTSB Form 6120.1/2, the airplane experienced a partial power loss shortly after takeoff. The pilot said the airplane was about 200 feet above the ground when she first noticed the power loss. The pilot said she leveled the airplane off when she observed the airspeed decreasing. Once leveled off, the airplane accelerated to its previous climb speed of 80 knots. The pilot said, "The level attitude....seemed to stabilize everything... ." She said she decided to turn toward the cross runway and land. According to the pilot, about halfway through the turn the airplane's engine power "...seemed to diminish further... ." Faced with a diminishing power situation, the pilot "established a gliding attitude. With altitude decreasing, I selected a grassy strip between a cornfield and the ditch along highway 233 for an emergency landing." She said that "Shortly after touch down the right main gear dropped into a grass filled waterway washout hole near the edge of the ditch and broke off." Shortly after this event the airplane slid to a stop. The on-scene investigation revealed engine control continuity, fuel samples that were not contaminated, and an electric fuel pump that pumped fuel to the engine's fuel injector nozzles. Magnetos created spark when turned, the air filter was free of debris, the air inlet housing was clear of any obstructions, all cylinders had compression when given the thumb compression check. Spark plugs were free of debris by the electrodes and were a tan/gray color. Engine gear train continuity was established when the engine was turned by hand. No oil leaks were observed on the engine or within its compartment. The engine's fuel servo was flow checked at a full power setting. The manufacturer's test specification states the limits are between 156.8 and 163.2 pounds per hour (pph). The flow test showed 163.5 pph. The manufacturer's idle setting limits were between 9.0 and 11.0 pph, the test resulted in 9.5 pph. The unit's finger screen was free of any contaminants. The flow divider's outflow openings showed consistent fuel pressure at each of its six openings. The unit's fuel pressure line outlet had fuel flow output. The engine driven fuel pump was examined and functioned according to the manufacturer's specifications. The cylinder fuel injector nozzles tested at pressures ranging between 32.7 and 34.0 pph. The left magneto's drive side bearing was loose in the housing. When checked on the test stand the magneto produced spark from an engine idle to full power setting. The right magneto produced the same type spark within the previously stated power range. Both magnetos were able to be grounded out. ## Aircraft - Registration: [N8144Y](https://openairdocs.org/aircraft/N8144Y), registered now, S/N 32-7940277, built 1979 (OpenAirDocs) - Reported make and model: PIPER PA-32-300 - Registry model: [Piper PA-32-300](https://openairdocs.org/model/piper-pa-32-300) (registry code 7103212) (OpenAirDocs) - Registry engine: [Lycoming IO-540 series](https://openairdocs.org/engine/lycoming-io-540-series) (registry code 41530, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 32-7940277 - Airframe hours: 2266 - Engines: LYCOMING IO-540-K1G5 300 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Ardis M. Luthe - Airworthiness certificate: Standard, Normal - Last inspection: Annual, July 20, 1994, 1 hours before - Destination: AUM, AUSTIN, MN ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 53; flight instructor, commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 1,095 total, 116 in this make and model, 895 as pilot in command, 16 in the last 90 days, 1 in the last 30 days ## Weather - Conditions: Day - Wind: 60° at 4 knots - Visibility: 10 statute miles - Lowest ceiling: 4,000 ft broken - Temperature: 81 °F, dew point 63 °F - Altimeter: 30.00 inHg - Observed at: ALO ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 19940729019869A](https://openairdocs.org/incident/19940729019869A), Jul 29, 1994: Piper PA32300, Marshalltown, IA, Substantial damage. Partial power loss on climbout. Struck ditch on precaution landing. No engine anomalies found. Pilot misjudgement. From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.