# NTSB ATL89LA001: Grumman AA-5A, N26827, Ridgeland, SC, October 1, 1988

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: October 1, 1988, 11:15 local (15:15 UTC)
- Place: Ridgeland, SC
- Coordinates: 32.480815, -80.979835 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=32.4808&lon=-80.9798&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 1 uninjured
- Status: Completed, report January 24, 1990
- Report: Approved by Office Director
- NTSB case key (mKey): 7933
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL89LA001
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/7933/pdf
- Page: https://openairdocs.org/ntsb/ATL89LA001

## Sequence of events

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

- Airframe/component/system failure/malfunction, taxi - to takeoff
  - landing gear,normal brake system - corroded (cause)
  - landing gear,normal brake system - chafed (cause)
  - landing gear,normal brake system - leak (cause)
- Loss of control - on ground/water, taxi - to takeoff
  - taxispeed - excessive, pilot in command (contributing factor)
  - throttle/power control - improper use of, pilot in command (contributing factor)
- Nose over, taxi - to takeoff
  - terrain condition - downhill

## Analysis

THE PLT REPORTED THAT THE LEFT BRAKE FAILED TO FUNCTION DURING TAXI WHEN HE ATTEMPTED TO REDUCE SPEED AND TURN 180 DEG INTO T/O POSITION. THE AIRPLANE BEGAN TO TRACK TO THE RIGHT. HE RELEASED BRAKE PRESSURE ON BOTH PEDALS THINKING THAT HE MIGHT HAVE BEEN APPLYING PRESSURE TO THE RUDDER PEDAL INSTEAD OF THE BRAKE PEDAL. HE THEN REAPPLIED PRESSURE AND EXPERIENCED THE SAME RESULTS. AT THAT POINT, HE REDUCED THE POWER TO IDLE. THE AIRPLANE RAN OFF THE SIDE OF THE RWY. TRAVELED DOWN AN EMBANKMENT, AND FLIPPED OVER. EXAM OF THE ACFT REVEALED A HOLE IN THE LEFT BRAKE-SYSTEM PRESSURE LINE BEHIND THE CO-PLT BRAKE PEDALS. THE HOLE HAD RESULTED FROM CHAFING BETWEEN A MOUNTING CLAMP & THE LINE. THE LINE & CLAMP WERE PROPERLY INSTALLED. THE HOLE WAS NOT VISIBLE UNTIL THE CLAMP WAS REMOVED. CORROSION WAS ALSO NOTED ON THE LINE IN THE AREA OF THE HOLE. A SEARCH OF FAA SDR'S REVEALED NO REPORTS OF SIMILAR FAILURES.

## Aircraft

- Registration: [N26827](https://openairdocs.org/deregistered/N26827-1991-01-29), registration cancelled 1991-01-29, S/N AA5A0746 (OpenAirDocs)
- Reported make and model: GRUMMAN AA-5A
- Registry model: [Gulfstream American AA-5A](https://openairdocs.org/model/gulfstream-american-aa-5a) (registry code 3970104) (OpenAirDocs)
- Category: Airplane
- Serial number: AA5A0746
- Airframe hours: 938
- Engines: LYCOMING O-320-E2G 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Ceronnie Robinson
- Registered owner: Robinson, Cerronnie
- Airworthiness certificate: Standard, Normal; Standard, Utility
- Last inspection: Annual, May 6, 1988, 32 hours before
- Destination: ABY, ALBANY, GA
- Flight plan: VFR
- Airport: 3J1, Ridgeland, runway 21, 3,100 × 70 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 39; private; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 322 total, 104 in this make and model, 171 as pilot in command, 13 in the last 90 days, 2 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 5 knots
- Visibility: 5 statute miles
- Lowest ceiling: none
- Temperature: 81 °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 19881001042599A](https://openairdocs.org/incident/19881001042599A), Oct 1, 1988: Gulstm AA5A, Ridgeland, SC, Substantial damage. Lost left brake while fast taxiing on runway. Ran down embankment and nosed over. Leaking brake line lost fluid.

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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