Unknown
1978-MAR-03 · Off the coast of Punta Mulatos, Venezuela

Línea Aeropostal Venezolana (LAV) — Flight Unknown

A Hawker Siddeley HS 748 crashed into the Caribbean Sea shortly after departing Caracas when the flight crew experienced a failure of the aircraft's attitude indicators. Approximately two minutes into the flight, the pilots reported the instrument malfunction and declared their intention to return to the airport. During the attempted return, the crew likely lost spatial orientation, leading the aircraft to impact the water approximately 5 kilometers off the coast. All 46 people on board were killed.

Aircraft
Hawker Siddeley HS 748-283 Srs. 2A
Registration
YV-45C
Phase
Climb
Cause
Sensor / Instrument Failure
Souls on Board
46
Fatalities
46
Origin → Dest
Simón Bolívar International Airport, Caracas, Venezuela → Antonio José de Sucre Airport, Cumaná, Venezuela
Report
Final

Investigation Summary

The flight departed Caracas-Maiquetía Airport for a short domestic leg to Cumaná. Shortly after takeoff, the crew encountered a critical failure involving the attitude indicators (artificial horizons), which are essential for maintaining the aircraft's orientation relative to the horizon, especially when flying over water or in low-visibility conditions where a natural horizon may not be visible. The pilots communicated the emergency to air traffic control and began a turn to return to the departure airport. However, without reliable attitude information, the pilots likely suffered from spatial disorientation. The aircraft descended and struck the sea at high speed. Because the wreckage came to rest in deep water, investigators were unable to recover major components of the airframe or the specific instruments to determine the exact nature of the mechanical or electrical failure that led to the erroneous readings.

Final Conclusions

The accident was caused by the failure of the aircraft's attitude indicators shortly after takeoff. This instrument malfunction, combined with the resulting spatial disorientation of the flight crew during an emergency return to the airport, led to an uncontrolled descent into the sea.

Video Analysis

No video analysis linked for this case file yet.

Systems & Failure Modes

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Attitude Indicator

The primary flight instrument used to inform the pilot of the aircraft's orientation relative to the Earth's horizon.

Interesting Facts

  • 01The aircraft was a Hawker Siddeley HS 748 Series 2A, a popular turboprop regional airliner.
  • 02The crash occurred only two minutes after the flight departed from Caracas.
  • 03All 43 passengers and 3 crew members perished in the accident.
  • 04The wreckage was located in deep water, which prevented the recovery of major aircraft sections for detailed analysis.
  • 05The primary reported cause was a malfunction of the artificial horizons.
  • 06The aircraft's manufacturer serial number (MSN) was 1756.

Location

Off the coast of Punta Mulatos, Venezuela · 10.6520, -66.9200

Case File History

  1. New evidenceUpdated casualty figures, findings and sources.
  2. New evidenceUpdated casualty figures and findings.

Related Cases

Case ID · lav-hs748-1978Last updated · Filed

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