# NTSB FTW95LA240: Ayres S2R-T34, N627LL, Iowa, LA, June 14, 1995

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 14, 1995, 10:00 local (15:00 UTC)
- Place: Iowa, LA
- Coordinates: 30.229598, -93.009178 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=30.2296&lon=-93.0092&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 19, 1995
- Report: Approved by Office Director
- NTSB case key (mKey): 19450
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW95LA240
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/19450/pdf
- Page: https://openairdocs.org/ntsb/FTW95LA240

## Probable cause

THE FAILURE OF THE RIGHT BRAKE DUE TO THE HYDRAULIC FLUID LEAKING. FACTORS WERE PROPER ALIGNMENT NOT POSSIBLE AND THE CLOSE PROXIMITY OF THE DITCH.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Airframe/component/system failure/malfunction, landing - roll
  - landing gear,normal brake system - malfunction
  - landing gear,normal brake system - leak (cause)
  - proper alignment - not possible, pilot in command (contributing factor)
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - ditch (contributing factor)

## Analysis

DURING THE LANDING ROLL, THE AIRPLANE DEPARTED THE LEFT SIDE OF THE GRASS AIRSTRIP, ROLLED THROUGH A DRAINAGE DITCH AND CAME TO REST IN A FIELD. THE PILOT EXAMINED THE BRAKES AND STATED THAT BRAKE FLUID HAD LEAKED FROM THE BRAKE PISTON 'O' RING.

## Factual narrative

On June 14, 1995, at 1000 central daylight time, an Ayres S2R-T34, N627LL, was substantially damaged during landing near Iowa, Louisiana.  The commercial pilot was not injured.  Visual meteorological conditions prevailed for the local aerial application flight operated by Deep South Flying Service, Inc., under Title 14 CFR Part 137.  The flight originated at 0950 and a flight plan was not filed.

During a telephone interview, conducted by the investigator-in- charge, the pilot reported that the aerial application flight originated from a private grass airstrip.  A drainage ditch approximately 18 feet wide and 4 feet deep was located along the west side of the airstrip.  While landing to the north, the right brake malfunctioned during the landing roll.  Subsequently, the airplane departed the left side of the airstrip, rolled through the drainage ditch and came to rest in a field.  The pilot examined the brakes and stated that brake fluid leaked from the brake piston "O" ring.

The Federal Aviation Administration (FAA) inspector examined the airplane and reported damage to the left wing spar and stringers. He further reported damage to the empennage tubing, engine, and propeller.

## Aircraft

- Registration: N627LL (not matched to a registry record)
- Reported make and model: AYRES S2R-T34
- Category: Airplane
- Serial number: T41-158
- Engines: P&W PT6A-41 850 horsepower turbo prop
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Deep South Flying Service, Inc
- Airworthiness certificate: Special, Restricted (Special)
- Airport: NONE, Mccown Strip, runway 36, 2,300 × 60 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 44; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 15,000 total, 500 in this make and model, 500 in the last 90 days, 150 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 84 °F

## 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 19950614049189A](https://openairdocs.org/incident/19950614049189A), Jun 14, 1995: Iowa, LA, Substantial damage. (-16) While landing at an agricultural strip that was not properly maintained, the right brake failed and the aircraft exited the left side of the runway,…

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.

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