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ERA23LA335 · Cessna 152

9 Aug 2023 · Manatí, PR, United States

Isla Grande Flying School Cessna 152 · Accident: fuel exhaustion en route

From Rafael Hernández International Airport (BQN) to Fernando Luis Ribas Dominicci Airport (SIG)

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Event

NTSB case
ERA23LA335
Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
Accident
InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
Completed
API-reported fatalities
0 · all aircraft and ground
Ground fatalities
Unknown
OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
General aviation
WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
Visual Meteorological Cond

Cessna 152

Aircraft type
Cessna 152
Category
Airplane
RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
N5313M
Onboard fatalities
Unknown
Route
From Rafael Hernández International Airport (BQN), Aguadilla, PRTo Fernando Luis Ribas Dominicci Airport (SIG), San Juan, PR
Aircraft age
About 43 years (built 1980)
Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
Part 91: General Aviation
Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
En route
Defining eventThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
Fuel exhaustion
DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
Substantial

Cause areas

  • Aircraft › Fluids/miscellaneous hardware
  • Personnel issues › Action/decision
  • Personnel issues › Task performance

Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.

NTSB narrative

During a visual-flight-rules instructional flight, the student pilot and flight instructor completed a variety of training maneuvers and takeoff and landing practice. They recalled that they departed with a total of about 16 gallons of fuel onboard, based on the preflight inspection of the fuel quantity by the student pilot with a dip stick. While returning to their home airport, about 15 minutes from landing, the engine gradually lost all power. The flight instructor took control of the airplane and attempted to restore engine power without success. She subsequently completed a forced landing in a field. During the landing roll, the airplane impacted an area of vegetation and trees, which resulted in substantial damage to the fuselage, wings, and empennage. Postaccident examination of the engine revealed no evidence of preimpact mechanical malfunctions or failures that would have precluded normal operation. The Federal Aviation Administration (FAA) inspector who examined the airplane at the accident site found no evidence of fuel. The airplane operator’s log for the accident airplane revealed that the airplane had been operated for a total of 5.2 hours since it was last refueled with an undetermined amount of fuel. According to the Pilot’s Operating Handbook, the airplane’s fuel capacity was 24.5 gallons and the estimated consumption rate was about 5.5 gallons per hour. Based on this information, and the lack of fuel found by the FAA inspector onboard the airplane at the accident site, it is likely that the flight instructor and student departed for the flight without sufficient available fuel, and that the engine lost total power due to an exhaustion of the fuel supply. Had the flight instructor personally verified the total fuel quantity onboard, it is possible that the accident could have been avoided.

Probable cause

The flight instructor’s inadequate preflight inspection of the fuel level, which resulted in a total loss of engine power due to fuel exhaustion.

Verbatim NTSB analysis and probable cause from the NTSB dataset

Sources

NTSB record ERA23LA335
Event ID
20230814192857
Case number
ERA23LA335
Dataset
full-current
Source SHA-256
5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
Source notes (4)
  • Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
  • Filled from the NTSB case API where the bulk record had no value: investigation status, cause areas. Values present in the bulk record are kept.
  • The date is the local date, which is the same as the UTC date the NTSB stores.
  • API snapshot SHA-256: db089043448847c1c3d2a579567e00e5f91b6b721130cc7e7a752ac816834a0b; retrieved 2026-09-16T17:59:38.051Z.