Boeing 737-200 N673MA
8 October 1992 · Anchorage, Alaska, United States · No injuries
Summary
On 8 October 1992 at about 17:39 local time, a Boeing 737-200 registered N673MA, operated by Mark Air, Inc, was involved in an incident near Anchorage, Alaska, United States. 26 people were on board and nobody was injured. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 17:39
- Classification
- Incident
- Location
- Anchorage, Alaska, United States
- Coordinates
- 69.2194, -146.7896
- Aircraft
- Boeing 737-200
- Registration
- N673MA
- Category
- Airplane
- Engines
- 2
- Operator
- Mark Air, Inc
- Operating rule
- Part 121: Air Carrier
- Purpose of flight
- Unknown
- Phase of flight
- Not recorded
- Route
- King Salmon → Elmendorf Afb
- Aircraft damage
- Not recorded
- Weather
- VMC
- Light
- Day
- NTSB number
- ANC93IA007
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 26 | 0 | 0 | 0 | 26 |
Probable cause
IMPROPER ATC CLEARANCE INSTRUCTIONS BY THE APPROACH CONTROLLER, RESULTING IN A FAILURE TO INSURE SAFE SEPARATION BETWEEN AN AIRPLANE IN VISUAL CONDITIONS WITH AN AIRPLANE IN INSTRUMENT METEOROLOGICAL CONDITIONS ON CONVERGING COURSES. A FACTOR WHICH CONTRIBUTED WAS INSUFFICIENT INFORMATION PROVIDED TO BOTH PILOTS BY THE CONTROLLER.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
THE DHC-8, N680MA, WAS NORTH BOUND IN RADAR CONTROL APRX 8 NM FROM ANC INTL ARPT, AND WAS PROVIDED VISUAL SEPARATION FROM THE B-737, N673MA, NE BOUND ON APCH TO ELMENDORF AFB. THE B-737 WAS IN CLOUDS AT THE TIME OF THE ADVISORY, AND THE DHC-8 MISTOOK ANOTHER B-737 FOR VISUAL SEPARATION. THE TCAS ALERTED THE FIRST B-737 PILOT OF CLOSE PROXIMITY OF TRAFFIC APPROACHING AT AT HIS 2 O'CLOCK POSITION, AND HE INITIATED A CLIMB IN IMC. A RAPID DESCENT WAS INITIATED BY THE DHC-8 PILOT AFTER SEEING THE B-737 EMERGING FROM THE CLOUDS. THESE EVASIVE ACTIONS OCCURRED APPROXIMATELY 20 SECS PRIOR TO THE CROSSING OF THE TRACKS OF THE TWO AIRPLANES. ATC CONTROL OF THE CONFLICTING AIRPLANES WAS BY THE SAME POSITION CONTROLLER ON SEPARATE FREQUENCIES. THE B-737 PILOT WAS NOT ADVISED NOR AWARE OF THE DHC-8 BEING PROVIDING VISUAL SEPARATION FROM HIS AIRPLANE PER FAA ORDER 7110.65G UNTIL THE TCAS PULL-UP AND VISUAL SIGHTING OF THE TRAFFIC PASSING UNDER AND IN FRONT.
Quoted verbatim from the NTSB record.
Aircraft involved
| Aircraft | Registration | Operator | Damage |
|---|---|---|---|
| Boeing 737-200 737-200 | N673MA | Mark Air, Inc | - |
| De Havilland DHC-8 DHC-8 | N680MA | Mark Air Inc. | - |
Other Boeing 737 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 12 Oct 1992 | Boeing 737-300 | Pittsburgh, Pennsylvania, United States | Usair | No injuries | - |
| 27 Aug 1992 | Boeing 737-200 | Miami, Florida, United States | Carnival Airlines | Serious injuries | - |
| 8 Dec 1992 | Boeing 737-300LR | Flushing, New York, United States | Usair | Fatal | - |
| 15 May 1992 | Boeing 737-200 | Palacios, Texas, United States | Southwest Airlines Co. | Serious injuries | - |
| 7 Jun 1992 | Boeing 737-204 | Tucuti, Panama | Copa Airlines | Unknown | - |
| 3 Aug 1992 | Boeing 737-300 | Springfield, Missouri, United States | Southwest Airlines, Inc. | Serious injuries | - |
All 1,317 records for this type
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 13 Feb 1992 | Piper PA-18A-150 | Anchorage, Alaska, United States | John Clark | Minor injuries | - |
| 12 Feb 1992 | Richard C Ballow KITFOX 1 | Valdez, Alaska, United States | Jones, William Marshall | No injuries | - |
| 17 Feb 1992 | Aeronca 7AC | Sitka, Alaska, United States | Diment, Archie G. | No injuries | - |
| 9 Oct 1992 | Champion 7EC | Chugiak, Alaska, United States | - | Fatal | 1 |
| 14 Feb 1992 | Cessna 180 | Shishmaref, Alaska, United States | Sheldon, Robert J. | Serious injuries | - |
| 19 Feb 1992 | Cessna 185F | Pelican, Alaska, United States | Bellair, Inc. | Minor injuries | - |