ANC13CA056 · Cub Crafters Inc CC11-100
Walla Walla University Cub Crafters Inc CC11-100 · Accident: loss of engine power (total) en route
From Merrill Field (PAMR) to Dillingham Airport (PADL)
Event
- NTSB case
- ANC13CA056
- 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
Cub Crafters Inc CC11-100
- Aircraft type
- Cub Crafters CC11
- 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
- N620Y
- Operator
- Walla Walla University
- Onboard fatalities
- Unknown
- Route
- From Merrill Field (PAMR), Anchorage, AKTo Dillingham Airport (PADL), Dillingham, AK
- Aircraft age
- Not recorded
- 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
- Loss of engine power (total)
- 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
- Environmental issues › Conditions/weather/phenomena
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The airplane departed with 24 gallons of usable fuel, which normally allows for 4.5 hours of flight. About 2.5 hours into the flight, the engine started running rough. The pilot confirmed the mixture was rich and the carburetor heat was on. About 5 minutes later the engine quit and the pilot executed a forced landing to an area of tundra-covered terrain, substantially damaging the undercarriage, fuselage, and left wing strut. A postaccident examination by a Federal Aviation Administration inspector revealed that the carburetor had separated from the engine during the forced landing, and the gascolator drain had tundra embedded in it. The pilot stated that he had turned the fuel selector to the OFF position about 30 minutes after the landing.
The carburetor icing chart indicated the possibility of serious carburetor icing at the reported atmospheric conditions. The Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25A) states that first indication of carburetor ice in an airplane with a fixed-pitch propeller is a decrease in engine rpm. Additionally, it states that when conditions are conductive to carburetor icing that carburetor heat should be applied immediately and should be left ON until the pilot is certain all the ice has been removed. If ice is present applying partial heat or leaving heat on for an insufficient time might aggravate the situation.
Postaccident examination of the airframe and engine revealed no preimpact mechanical malfunctions or failure that would have precluded normal operation.
Probable cause
A loss of engine power due to carburetor icing.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ANC13CA056
- Event ID
- 20130619X94050
- Case number
- ANC13CA056
- 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, coordinates. 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: cd74c09cd5f23a59b47c42a4df40c171f9895b844599d02f6b11da57346c7c30; retrieved 2026-09-15T21:57:48.902Z.