# NTSB FTW89LA062: Cessna 421B, N5999M, San Antonio, TX, March 3, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 3, 1989, 02:45 local (08:45 UTC)
- Place: San Antonio, TX
- Location: 29.5340° N, 98.4691° W: Placed by OpenAirDocs at SAN ANTONIO INTL (SAT), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=29.5340&lon=-98.4691&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report September 28, 1990
- Report: Approved by Office Director
- NTSB case key (mKey): 22844
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW89LA062
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/22844/pdf
- Page: https://openairdocs.org/ntsb/FTW89LA062

## Probable cause

THE FAILURE OF THE PILOT TO FOLLOW THE PROPER PROCEDURES/DIRECTIVES BY NOT FOLLOWING THE GLIDESLOPE WHICH RESULTED IN NOT BEING ABLE TO ATTAIN THE PROPER TOUCHDOWN POINT.

## Sequence of events

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

- Overrun, landing - flare/touchdown
  - light condition - dark night (contributing factor)
  - weather condition - low ceiling (contributing factor)
  - ifr procedure - not followed, pilot in command (cause)
  - weather condition - obscuration (contributing factor)
  - proper glidepath - not followed, pilot in command (cause)
  - planned approach - not followed, pilot in command (cause)
  - go-around - not performed, pilot in command (cause)
- In flight collision with terrain/water, landing - flare/touchdown
  - terrain condition - rough/uneven (contributing factor)
- In flight collision with object, landing - flare/touchdown
  - object - approach light/navaid (contributing factor)

## Aircraft

- Registration: [N5999M](https://openairdocs.org/deregistered/N5999M-1989-04-04), registration cancelled 1989-04-04, S/N 421B0242 (OpenAirDocs)
- Reported make and model: CESSNA 421B
- Registry model: [Cessna 421B](https://openairdocs.org/model/cessna-421b) (registry code 2076014) (OpenAirDocs)
- Category: Airplane
- Serial number: 0242
- Airframe hours: 2897
- Engines: CONTINENTAL GTSIO-520-H 375 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Business, Part 91
- Registered owner: Oldenburg, C.M.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, April 6, 1988, 53 hours before
- Departed: MEM, MEMPHIS, TN
- Destination: SAT
- Flight plan: IFR
- Airport: SAT, San Antonio International, runway 30, 8,502 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 45; private; airplane ratings: multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 732 total, 34 in this make and model, 587 as pilot in command, 36 in the last 90 days, 11 in the last 30 days, 8 in the last 24 hours

## Weather

- Conditions: Instrument (IMC), Night/dark
- Wind: 150° at 6 knots
- Lowest ceiling: 100 ft
- Temperature: 57 °F, dew point 57 °F
- Altimeter: 29.00 inHg
- Observed at: SAT, 1 nm away

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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