Cessna 525 N111LR
4 April 1998 · Marietta, Georgia, United States · Fatal
Summary
On 4 April 1998 at about 15:32 local time, a Cessna 525 registered N111LR, operated by Marion H. Allen, was involved in an accident near Marietta, Georgia, United States. 5 people were on board and 5 died. The aircraft was destroyed. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 15:32
- Classification
- Accident
- Location
- Marietta, Georgia, United States
- Coordinates
- 33.9703, -84.4307
- Aircraft
- Cessna 525
- Registration
- N111LR
- Category
- Airplane
- Engines
- 2
- Operator
- Marion H. Allen
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Business
- Phase of flight
- Not recorded
- Route
- Chamblee → Harrisburg
- Aircraft damage
- Destroyed
- Weather
- VMC
- Light
- Day
- NTSB number
- ATL98FA060
People
5 people died.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 5 | 5 | 0 | 0 | 0 |
Probable cause
The failure of both pilots to see and avoid conflicting traffic, and the failure of the 172 pilot to operate the transponder as required by current regulations. Factors were the controller's failure to observe the traffic conflict, the lack of radar conflict alert capability, and the training emphasis on maximum autopilot usage with the autopilot controller placed at the rear of the cockpit center mounted pedestal.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
A Cessna 525 and a Cessna 172 collided in flight about 3,400 feet mean sea level on converging courses, with the 525 heading north and the 172 heading southwest. The converging speed was about 300 knots. The 525 departed under instrument flight rules, received vectors, and was initiating a climb on course. Training in the 525 emphasizes maximum use of the autopilot to afford greater outside scanning by the single pilot. The 525 was in radio contact with terminal approach control and the pilot's acknowledgement of the climb clearance was interrupted by the collision. The 172 had departed a local airfield, located just outside the 30 mile Mode C veil airspace of a terminal airport, and proceeded southwest. The collision occurred as the 172 was approaching Class D airspace of a military tower, and the pilot was initiating radio contact with the military tower. The terminal approach controller in contact with the 525 stated he did not observe the primary target of the 172, and conflict alert software was not installed. The 172 did not display a transponder signal and the transponder switch was subsequently found in the 'off' position. A cockpit visibility study indicated that from a fixed eye position the 172 was essentially hidden behind aircraft structure of the 525 for the 125 seconds before impact. The 172 could be seen by shifting the pilot's eye position. The 525 was viewable in the left lower section of the 172's windscreen. Both airplanes were operating in visual flight conditions.
Quoted verbatim from the NTSB record.
Aircraft involved
| Aircraft | Registration | Operator | Damage |
|---|---|---|---|
| Cessna 525 525 | N111LR | Marion H. Allen | Destroyed |
| Cessna 172N 172N | N737WD | - | Destroyed |
Other Cessna 525 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 9 Dec 1999 | Cessna 525 | Branson, Missouri, United States | - | Fatal | 6 |
| 29 Aug 1996 | Cessna 525 | Milwaukee, Wisconsin, United States | - | No injuries | - |
| 26 Mar 2000 | Cessna 525 | Buda, Texas, United States | - | Fatal | 1 |
| 8 Mar 2001 | Cessna 525 | Hamburg, Germany | Vdse Gmbh | No injuries | - |
| 15 Feb 1995 | Cessna 525 | Wauchula, Florida, United States | M & M Air Inc. | No injuries | - |
| 8 Feb 2002 | Cessna 525A | Novato, California, United States | - | No injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 18 Nov 1998 | Beechcraft BE-55B | Hampton, Georgia, United States | Robert L. West | No injuries | - |
| 11 Nov 1998 | Grumman-Schweizer G164B | Cuthbert, Georgia, United States | Thrash Viation Inc. | Minor injuries | - |
| 1 Oct 1998 | Cessna C-172F | Ball Ground, Georgia, United States | - | No injuries | - |
| 12 Oct 1998 | Air Tractor AT502B | Bainbridge, Georgia, United States | - | Serious injuries | - |
| 25 Nov 1998 | Cessna 175 | Locust Grove, Georgia, United States | - | Minor injuries | - |
| 31 Jul 1998 | Hughes TH-55A | Savannah, Georgia, United States | - | No injuries | - |