Investigation Summary
The investigation highlighted a breakdown in Cockpit Resource Management (CRM) and linguistic nuances in aviation communications. The First Officer, who was handling radio communications, informed controllers that the flight 'could not hold any longer' and was 'running out of fuel,' but he never explicitly declared a fuel emergency. In the U.S. ATC system, the phrase 'minimum fuel' is an advisory, not a request for priority. Because the controllers did not hear the word 'emergency,' they continued to treat the flight as one of many delayed by the weather. Additionally, the Captain was unaware that his First Officer had not clearly conveyed the urgency, partly due to the Captain's limited English proficiency and the First Officer's failure to assertively translate the Captain's commands into the required emergency terminology.
Final Conclusions
The NTSB determined the probable cause was the flight crew's failure to adequately manage the fuel load and their failure to communicate an emergency fuel situation to ATC. Contributing factors included the lack of an operational control dispatch system, inadequate traffic flow management by the FAA, and a lack of standardized terminology for fuel states. Windshear, crew fatigue, and stress were also cited as factors that led to the failed first approach. Recommendations were addressed to the FAA and the DAAC in Colombia.
Photographic Evidence (1)
Video Analysis
The Fuel Exhaustion Crash of Avianca Flight 052 — This video examines the 1990 crash of a Boeing 707 in Cove Neck, New York, caused by fuel exhaustion following communication failures and extensive holding patterns.
If playback is blocked, the owner has disabled embedding — use the link above.
Airframe & Maintenance
Crew Experience
Captain
Age 51; limited English proficiency. Had been on duty since 11:21 EST.
First Officer
Age 28; handled all radio communications. Had been on duty since 11:21 EST.
Flight Engineer
Age 45. Had been on duty since 11:21 EST.
Systems & Failure Modes
Fuel System
The aircraft suffered total fuel exhaustion, leading to a four-engine flameout.
Autopilot
The altitude hold function was known to be faulty and was disabled, increasing pilot workload during the approach.
ILS (Instrument Landing System)
The crew attempted an ILS approach to Runway 22L but failed to stabilize the approach in poor weather.
Interesting Facts
- 01The aircraft was held in three separate patterns for a total of 1 hour and 17 minutes.
- 02The crew informed ATC they could not reach their alternate airport, Boston-Logan, due to fuel.
- 03The word 'emergency' was never used by the crew during communications with ATC.
- 04The aircraft was 22 years old with over 61,000 flight hours at the time of the accident.
- 05The autopilot, including the altitude hold function, was inoperative and had been disabled.
- 06The installation of Stage 2 hush kits required a 5 percent fuel overburn calculation, increasing the rate of fuel consumption.
Safety Actions & Advisories
Standardized Fuel Terminology
The FAA and ICAO worked to standardize terminology for 'minimum fuel' and 'emergency fuel' to ensure clear communication between pilots and controllers.
Dispatch Requirements
Recommendations were made to strengthen requirements for airline operational control and dispatch systems for international flights.
Known Controversies & Unanswered Questions
ATC Responsibility Dispute
Reference ↗Avianca and the Colombian civil aviation authority (DAAC) argued that ATC was partially responsible for failing to recognize the urgency of the flight's situation and for providing inadequate weather information.