# NTSB WPR22LA190: Co-Z Development Cozy Mark IV, N44CZ, Page, AZ, May 25, 2022

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 4 · Limited · Final report
- Date: May 24, 2022, 19:15 local (May 25, 2022, 02:15 UTC)
- Place: Page, AZ
- Coordinates: 36.925325, -111.4511
- Nearby events: https://openairdocs.org/map.md?lat=36.9253&lon=-111.4511&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Defining event: [Landing: Landing gear collapse](https://openairdocs.org/ntsb-events/094)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- Investigation class: Class 4 - Basic report with no Prelim publish
- NTSB office: Western Pacific Region
- Parties: FAA FSDO
- NTSB case key (mKey): 105163
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR22LA190
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/105163/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=105163
- Page: https://openairdocs.org/ntsb/WPR22LA190

## Probable cause

The failure to install the correct fuse in the landing gear circuit.

## Findings

NTSB's coded findings; those marked are part of the probable cause.

- [Electrical power system](https://openairdocs.org/ntsb-findings/01022400): Aircraft › Aircraft systems · Incorrect service/maintenance (probable cause); cases with it: [Co-Z Development COZY MARK IV, 1 case](https://openairdocs.org/ntsb-findings/01022400/cases.md?model=05612CJ), [All aircraft, 48 cases](https://openairdocs.org/ntsb-findings/01022400/cases.md)

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Landing: Landing gear collapse](https://openairdocs.org/ntsb-events/094) (defining event); cases with it: [Co-Z Development COZY MARK IV, 1 case](https://openairdocs.org/ntsb-events/094/sequence.md?model=05612CJ), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md)

## Analysis

The pilot reported that, the landing gear did not deploy on approach and the airplane subsequently landed with the nose gear retracted. The pilot stated the wrong electrical fuse was installed in the landing gear circuit. The airplane sustained substantial damage to the fuselage. The pilot reported no other preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

## Aircraft

- Registration: [N44CZ](https://openairdocs.org/aircraft/N44CZ), registered now, S/N 1, built 1988 (OpenAirDocs)
- Reported make and model: CO-Z DEVELOPMENT CORP COZY MARK IV
- Registry model: [Co-Z Development COZY MARK IV](https://openairdocs.org/model/co-z-development-cozy-mark-iv) (registry code 05612CJ) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1
- Year built: 1988
- Airframe hours: 1150
- Engines: Co-Z Development Corp. Cozy Mark IV 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Randy Jaeger
- Registered owner: Throery Seventy Three Corporation
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Condition, March 29, 2022, 1,150 hours before
- Departed: KCNO, Chino, CA
- Destination: KPGA, Page, AZ
- Airport: PGA, Page Municipal, runway 33, 5,950 × 150 ft, asphalt
- Equipment: Auto-pilot, Electronic flight bag or handheld device, Electronic multifunction display, Electronic primary flight display, Handheld GPS, Onboard weather, Satellite tracking device, ADS-B

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 59; injuries: none; private; airplane ratings: single-engine land; medical: class 3, with waivers/limitations; last flight review February 5, 2022; seat: left; flight hours: 309 total, 309 as pilot in command, 12 in the last 90 days, 12 in the last 30 days

## Weather

- Conditions: Visual (VMC), Dusk
- Wind: variable at 4 knots
- Visibility: 10 statute miles
- Temperature: 19 °F, dew point -11 °F
- Observed at: KPGA METAR
- METAR: METAR KPGA 242153Z AUTO VRB04KT 10SM CLR 27/M10 A2989 RMK AO2 SLP062 T02671100 $=

## Docket (2 files)

The files NTSB released with the investigation on October 4, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=105163. 2.2 MB in all.

- Pilot/operator aircraft accident report, NTSB form 6120.1 (item 1, PDF, 11 pages, 2.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=14515502&FileExtension=pdf&FileName=WPR22LA190%20Pilot%20Report%206120_Redacted-Rel.pdf
- Photo (item 2, PDF, 1 page, 160 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=14465904&FileExtension=pdf&FileName=WPR22LA187%20Photos-Rel.pdf

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.

---
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.