# NTSB CHI05CA036: Spaulding Tailwind W-8, N191AS, Davey, NE, November 24, 2004 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: November 24, 2004, 12:00 local (18:00 UTC) - Place: Davey, NE - Coordinates: 40.617778, -96.92472 - Nearby events: https://openairdocs.org/map.md?lat=40.6178&lon=-96.9247&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report June 28, 2006 - Report: Approved by Office Director - NTSB case key (mKey): 60760 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI05CA036 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/60760/pdf - Page: https://openairdocs.org/ntsb/CHI05CA036 ## Probable cause The loss of engine power due to the loss of oil pressure as a result of the pilot's failure to properly install the oil line to the oil cooler. A factor was the rough terrain. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power(partial) - mech failure/malf, cruise - maintenance,installation - improper, owner/pilot mechanic (cause) - lubricating system,oil hose - disconnected (cause) - lubricating system - starvation - Forced landing, emergency descent/landing - On ground/water encounter with terrain/water, landing - roll - terrain condition - rough/uneven (contributing factor) ## Analysis The amateur-built airplane sustained substantial damage during a forced landing to a field after a loss of power. The pilot reported that after 20 minutes of flight the engine RPM decreased and there was no oil pressure indication on the oil pressure instrument. The pilot executed a forced landing to a nearby field. During the landing rollout, the landing gear collapsed when the airplane went through a small gulley. The inspection of the engine revealed that an oil hose had blown off one end of the oil cooler. The pilot reported that he had removed the hose during maintenance. When he reinstalled the line on the oil cooler the hose did not get fully attached. He reported, "Evidently when the hose was replaced the end of the nipple stopped at the indentation in the hose caused by the clamp. When the clamp was replaced it was barely over the tip of the hose." ## Factual narrative On November 24, 2004, about 1200 central standard time, an amateur-built Spaulding Tailwind W-8, N191AS, sustained substantial damage during a forced landing to a field near Davey, Nebraska, after a loss of power. The private pilot was not injured. The 14 CFR Part 91 personal flight departed Crete Municipal Airport, Crete, Nebraska, on a local flight. Visual meteorological conditions prevailed. No flight plan was filed. The pilot reported that after 20 minutes of flight the engine RPM decreased and there was no oil pressure indication on the oil pressure instrument. The pilot executed a forced landing to a nearby field. During the landing rollout, the landing gear collapsed when the airplane went through a small gulley. The inspection of the engine revealed that an oil hose had blown off one end of the oil cooler. The pilot reported that he had removed the hose during maintenance. When he reinstalled the line on the oil cooler the hose did not get fully attached. He reported, "Evidently when the hose was replaced the end of the nipple stopped at the indentation in the hose caused by the clamp. When the clamp was replaced it was barely over the tip of the hose." ## Aircraft - Registration: [N191AS](https://openairdocs.org/aircraft/N191AS), registered now, S/N 91 (OpenAirDocs) - Reported make and model: Spaulding Tailwind W-8 - Registry model: [Spaulding Albert Lee TAILWIND W-8](https://openairdocs.org/model/spaulding-albert-lee-tailwind-w-8) (registry code 9790849) (OpenAirDocs) - Registry engine: [Lycoming 0-290 series](https://openairdocs.org/engine/lycoming-0-290-series) (registry code 41506, 4 cycle) (OpenAirDocs) - Category: Airplane, amateur-built - Serial number: 91 - Engines: Lycoming O-290-G 120 hp reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Operator: Alber Spaulding - Registered owner: Albert L. Spaulding - Airworthiness certificate: Special, Experimental (Special) - Departed: CEK, Crete, NE ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 71; injuries: none; private; airplane ratings: single-engine land; medical: class 3; last flight review December 8, 2003; flight hours: 7 total, 618 in this make and model, 1,258 as pilot in command, 15 in the last 90 days, 4 in the last 30 days ## Weather - Conditions: Visual (VMC), Day ## 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 20041124032899A](https://openairdocs.org/incident/20041124032899A), Nov 24, 2004: Amtr TAILWINDW8, Davey, NE, Substantial damage. (-23) N191AS, an [privacy data omitted] tailwind W-8, lost RPM and oil pressure during cruise flight. The pilot had departed crete municipal airport for a… 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.