# Federsen Walter LANCAIR IVP

- Type: Aircraft model (FAA registry)
- Registry code: 05611WL
- Manufacturer (registry): FEDERSEN WALTER
- Model: LANCAIR IVP
- Aircraft type: Fixed wing single engine
- Category: Airplane
- Engines: 1 · Reciprocating
- Seats: 4
- Weight class: Up to 12,499 lb
- Certification: Not type certificated
- Registered aircraft: 0
- Page: https://openairdocs.org/model/federsen-walter-lancair-ivp

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

None matched.

## Registered aircraft

None registered with this model now.

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CEN14FA389](https://openairdocs.org/ntsb/CEN14FA389), Jul 27, 2014: Federsen Walter Lancair IVP (N40941), Findlay, OH, destroyed, 2 fatal. Probable cause: An in-flight fire for reasons that could not be determined due to the extent of impact and fire damage.

## FAA accident and incident reports (2)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20140727012809A](https://openairdocs.org/incident/20140727012809A), Jul 27, 2014: Federsen Walter LANCAIR IVP (N40941), Findlay, OH, Destroyed, 2 fatal. On 07/27/2014 around 01:00 toledo ATC took N40941, a lance air ivp at 14,500' and 280 knots inbound for a full stop landing at bluffton (5G7). The pilot in…
- [Incident 20120604023249I](https://openairdocs.org/incident/20120604023249I), Jun 4, 2012: Federsen Walter LANCAIR IVP (N40941), Bluffton, OH, Minor damage. When discussing the events with the pilot of N40941, he stated that during the course of his flight that everything was normal. He was established in cruise at…

## Service difficulty reports (3)

As reported by operators and repair stations, by the model named in the report.

- [SDR 2025FA0000532](https://openairdocs.org/sdr/2025FA0000532), Jul 31, 2025: WINDSHIELD. FRACTURED. LANCAIR IV-P, WHILE IN PRESSURIZED CRUISE FLIGHT AT 15,500' MSL AND 245KTS, A LARGE PORTION OF THE WINDSHIELD FRACTURED AND SEPARATED FROM THE AIRCRAFT. AN IMME
- [SDR 2013FA0000412](https://openairdocs.org/sdr/2013FA0000412), Jul 1, 2013: CRANKSHAFT. CRACKED. ENGINE OVERHAULED 105 HOURS AGO, AND CRANK WAS ULTRASOUND TESTED OK. NO INCIDENTS OF ANY KIND HAVE EVER OCCURRED WITH THIS ENGINE OR PROPELLER, SUCH AS PROP STR
- [SDR 2012FA0000352](https://openairdocs.org/sdr/2012FA0000352), Jun 4, 2012: WINDOW. DEPARTED. DURING CRUISE AT 20,000 FT, HEARD A BANG, AND THEN PILOT`S EARS POPPED. DESCENDED TO 11,000 FT. A PHYSICAL REVIEW OF ACFT REVEALED THE LT REAR WINDOW BEHIND ENT

## The same model under other registry codes

Amateur-built copies and renamed makers get their own codes.

- [Pratt Dennis C LANCAIR IV P](https://openairdocs.org/model/pratt-dennis-c-lancair-iv-p): 1 registered aircraft, registry code 05601IZ
- [Coleman Charles LANCAIR IV P](https://openairdocs.org/model/coleman-charles-lancair-iv-p): 1 registered aircraft, registry code 05601L9
- [Raetech Motorsports LANCAIR IV-P](https://openairdocs.org/model/raetech-motorsports-lancair-iv-p): 1 registered aircraft, registry code 056020J
- [Graham Richard A LANCAIR IV-P](https://openairdocs.org/model/graham-richard-a-lancair-iv-p): 1 registered aircraft, registry code 05602CV
- [Euzarraga David H LANCAIR IV P](https://openairdocs.org/model/euzarraga-david-h-lancair-iv-p): 1 registered aircraft, registry code 0560382
- [Yoder Jack LANCAIR IVP](https://openairdocs.org/model/yoder-jack-lancair-ivp): 1 registered aircraft, registry code 056039V
- [Falcon Helicopter LANCAIR IV-P](https://openairdocs.org/model/falcon-helicopter-lancair-iv-p): 1 registered aircraft, registry code 05603LR
- [Zedaker Tom LANCAIR IVP](https://openairdocs.org/model/zedaker-tom-lancair-ivp): 1 registered aircraft, registry code 05603PR
- [Patterson M/Fenoglio J/Nelon C LANCAIR IVP](https://openairdocs.org/model/patterson-m-fenoglio-j-nelon-c-lancair-ivp): 1 registered aircraft, registry code 05603Q7
- [Hill George Melvin LANCAIR IV P](https://openairdocs.org/model/hill-george-melvin-lancair-iv-p): 1 registered aircraft, registry code 0560404
- [Hooker William M LANCAIR IV-P](https://openairdocs.org/model/hooker-william-m-lancair-iv-p): 1 registered aircraft, registry code 056041J
- [Etzler Richard LANCAIR IV P](https://openairdocs.org/model/etzler-richard-lancair-iv-p): 1 registered aircraft, registry code 056044V

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.