Air South Flight 312
Boeing 737-247 · Incident: overrun during landing
From Columbia Metropolitan Airport (CAE) to Hartsfield Jackson Atlanta International Airport (ATL)
Event
- NTSB case
- ATL95IA043
- 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
- Incident
- 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
- 0
- 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
- Airline
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Instrument Meteorological Cond
Boeing 737-247
- Aircraft type
- Boeing 737
- 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
- N4515W
- Operator
- Air South
- Onboard fatalities
- Unknown
- Route
- From Columbia Metropolitan Airport (CAE), Columbia, SCTo Hartsfield Jackson Atlanta International Airport (ATL)
- 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 121: Air Carrier
- 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
- Landing · landing roll
- First occurrenceThe 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
- Overrun
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Minor
Cause areas
- Hydraulic system, line › Misrouted
- Landing gear, anti-skid brake system › Failure, partial
- Other maintenance personnel › Maintenance, inspection, inadequate
Approximate · Estimated position: the centre of Atlanta, GA, the place the record names. Not the accident site.
NTSB narrative
THE FLIGHT CREW REPORTED THAT THE FLIGHT PROCEEDED NORMALLY UNTIL THE LANDING ROLL. THE FIRST OFFICER FELT THE ANTISKID RELEASING, AND THE CAPTAIN TOOK OVER THE CONTROLS. BRAKING ACTION WAS INITIALLY FELT, THEN ALL BRAKING ACTION WAS LOST. THE AIRCRAFT DEPARTED THE END OF THE RUNWAY, AND CAME TO A STOP ABOUT 200 FEET PAST THE DEPARTURE END, IN THE GRASS. THE LEFT OUTBOARD MAIN TIRE WAS BLOWN. EXAMINATION OF THE AIRCRAFT REVEALED THAT THE LEFT, INBOARD ANTISKID VALVE BRAKE AND RETURN LINES WERE CROSSED. THE LEFT, INBOARD SKID DETECT CIRCUIT WAS FOUND INOPERATIVE. ALSO, THE WIRING TO THE LEFT, INBOARD AND LEFT, OUTBOARD WHEEL SPEED TRANSDUCERS WERE CROSSED. THERE WAS ALSO EVIDENCE THAT THE AIRCRAFT HAD HYDROPLANED NEAR THE DEPARTURE END OF THE RUNWAY. THE AIRCRAFT DISCREPANCIES WERE NOT DISCOVERED DURING ANTISKID SYSTEM TESTING PERFORMED ABOUT 2 WEEKS PRIOR TO THE ACCIDENT.
Probable cause
THE INADEQUATE INSPECTION OF THE AIRCRAFT BY OTHER MAINTENANCE PERSONNEL, IN THAT THEY DID NOT PROPERLY DIAGNOSE DISCREPANCIES IN THE ANTISKID BRAKING SYSTEM.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record ATL95IA043
- Event ID
- 20001207X02815
- Case number
- ATL95IA043
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
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. 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: ae64a505cb6f8b0cfed301d976897f05573ffeb376e5f41a257ffaed82773710; retrieved 2026-09-18T18:04:12.870Z.