# NTSB MIA08LA053: Cessna C-172RG, N6562V, Chamblee, GA, February 7, 2008 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: February 7, 2008, 18:15 local (23:15 UTC) - Place: Chamblee, GA - Coordinates: 33.871944, -84.301109 - Nearby events: https://openairdocs.org/map.md?lat=33.8719&lon=-84.3011&mi=10 - Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping) - Defining event: [Approach: Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report March 31, 2008 - Report: Approved by Office Director - Parties: Atlanta FSDO - NTSB case key (mKey): 67483 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA08LA053 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/67483/pdf - Page: https://openairdocs.org/ntsb/MIA08LA053 ## Probable cause A cracked nose gear actuator o-ring resulting in hydraulic fluid exhaustion, and collapse of the main gear. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Fluids: hydraulic fluid](https://openairdocs.org/ntsb-findings/01071015): Aircraft › Fluids/misc hardware · Fluid level; cases with it: [Cessna 172RG, 3 cases](https://openairdocs.org/ntsb-findings/01071015/cases.md?model=2072438), [All aircraft, 33 cases](https://openairdocs.org/ntsb-findings/01071015/cases.md) - [Landing gear system: nose/tail landing gear](https://openairdocs.org/ntsb-findings/01023220): Aircraft › Aircraft systems · Malfunction (probable cause); cases with it: [Cessna 172RG, 3 cases](https://openairdocs.org/ntsb-findings/01023220/cases.md?model=2072438), [All aircraft, 185 cases](https://openairdocs.org/ntsb-findings/01023220/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Approach: Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330) (defining event); cases with it: [Cessna 172RG, 11 cases](https://openairdocs.org/ntsb-events/330/sequence.md?model=2072438), [All aircraft, 994 cases](https://openairdocs.org/ntsb-events/330/sequence.md) - [Landing-landing roll: Landing gear collapse](https://openairdocs.org/ntsb-events/094); cases with it: [Cessna 172RG, 11 cases](https://openairdocs.org/ntsb-events/094/sequence.md?model=2072438), [All aircraft, 1,787 cases](https://openairdocs.org/ntsb-events/094/sequence.md) ## Analysis According to the certified flight instructor (CFI), he and the pilot-rated student were approaching to land on runway 20R. After completing the pre-landing checklist they checked the under-wing mirror and noticed that the main landing gear were not down and locked. They made every attempt to lower the gear but were unsuccessful. During landing the right main landing gear collapsed buckling the right elevator. Both occupants egressed the airplane without injury. Examination of the landing gear by an FAA Inspector found the nose gear Actuator O-ring cracked and leaking hydraulic fluid and all fluid had been exhausted. ## Factual narrative On February 7, 2008, about 1815 eastern standard time, a Cessna 172RG, N6562V, registered to and operated by Aviation Atlanta Inc., had the right main landing gear collapse during landing at the DeKalb-Peachtree Airport (PDK) in Chamblee, Georgia. The instructional flight was operated under the provisions of 14 Code of Federal Regulations Part 91 with no flight plan filed. Visual meteorological conditions prevailed. The certified flight instructor (CFI) and pilot rated student reported no injuries. The airplane sustained substantial damage. The flight departed from PDK on a local training flight on February 7, 2008, about 1530. According to the CFI, he and the pilot rated student were approaching to land on runway 20R. After completing the pre-landing checklist they checked the under-wing mirror and noticed that the main landing gear were not down and locked. They made every attempt to lower the gear but were unsuccessful. During landing the right main landing gear collapsed buckling the right elevator. Both occupants egressed the airplane without injury. Examination of the landing gear by an FAA Inspector found the nose gear Actuator O-ring cracked and leaking hydraulic fluid and all fluid had been exhausted.. ## Aircraft - Registration: [N6562V](https://openairdocs.org/aircraft/N6562V), registered now, S/N 172RG0775, built 1980 (OpenAirDocs) - Reported make and model: Cessna C-172RG - Registry model: [Cessna 172RG](https://openairdocs.org/model/cessna-172rg) (registry code 2072438) (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: 6562N - Airframe hours: 6153.5 - Engines: Lycoming O-360-F1AG 180 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Aviation Atlanta Inc. - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, January 1, 2008, 25 hours before - Departed: KPDK, Chamblee, GA - Destination: Chamblee, GA - Airport: KPDK, Dekalb-Peachtree Airport, runway 20R, 3,746 × 150 ft, asphalt ## Flight crew As NTSB recorded them. NTSB leaves out names. - Flight instructor; age 26; injuries: none; commercial, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, with waivers/limitations; last flight review May 1, 2007; seat: left; flight hours: 810 total, 120 in this make and model, 660 as pilot in command, 156 in the last 90 days, 65 in the last 30 days, 4 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 240° at 6 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 54 °F, dew point 36 °F - Altimeter: 29.89 inHg - Observed at: KPDK ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20080207831769A](https://openairdocs.org/incident/20080207831769A), Feb 7, 2008: Cessna 172RG, Atlanta, GA, Substantial damage. (-23) Cessna 172RG, N6562V while performing practice landing/take-off maneuvers experienced hydraulic sytem failure. Landing gear system failure occurred after… ## Other investigations on N6562V (2) 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 ATL04IA138](https://openairdocs.org/ntsb/ATL04IA138), May 11, 2004: Cessna 172RG (N6562V), Chamblee, GA, incident, no damage. Probable cause: The fatigue fracture of the nosewheel bungee assembly, which restricted the movement of the elevator control. A factor was the inadequate equipment from an unknown source/manufacturer. - [NTSB MIA98LA165](https://openairdocs.org/ntsb/MIA98LA165), May 17, 1998: Cessna 172RG (N6562V), Roberta, GA, substantial damage. Probable cause: The pilot's inadequate compliance with the emergency procedures for his failure to completely pump the main landing gear into the down and locked position. Contributing to the accident was the… 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.