Vliegtuigongeval op 05 MAR 1967 met Convair CV-580 N73130

Home » Database » 1967

Accident

Last updated: 19 June 2013

Status:	Definitief
Datum:	05 MRT 1967
Tijd:	20:07 EST
Type:	Convair CV-580
Luchtvaartmaatschappij:	Lake Central Airlines
Registratie:	N73130
Constructienummer:	23
Bouwjaar:	1952
Aantal vlieguren:	16216
Motoren:	2 Allison 501-D13D
Bemanning:	slachtoffers: 3 / inzittenden: 3
Passagiers:	slachtoffers: 35 / inzittenden: 35
Totaal:	slachtoffers: 38 / inzittenden: 38
Schade:	Afgeschreven
Gevolgen:	Written off (damaged beyond repair)
Plaats:	3 km (1.9 mijl) SE of Marseilles, OH (Verenigde Staten)
Fase:	Kruisvlucht (ENR)
Soort vlucht:	Binnenlandse lijnvlucht
Vliegveld van vertrek:	Columbus-Port Columbus International Airport, OH (CMH/KCMH), Verenigde Staten
Vliegveld van aankomst:	Toledo-Express Airport, OH (TOL/KTOL), Verenigde Staten
Vluchtnummer:	527

Beschrijving:
Lake Central Airlines Flight 527 departed Chicago, IL for a flight to Detroit, MI with intermediate stops at Lafayette, IN, Cincinnati, OH, Columbus, IN and Toledo, OH. The aircraft arrived at Columbus at 19:35 and took off for Toledo 17 minutes later. About 20:05 the flight was cleared from its assigned cruising altitude of 10,000 feet to descend to 6,000 feet and report leaving 8,000 feet and 7,000 feet. Shortly after commencing the descent, all four prop blades on the no. 2 engines separated. The no. 2 prop blade penetrated the fuselage. While yawing to the right, the fuselage failed along the line of penetrations and the Convair crashed.
When the torque cylinder failed, prop pressure oil was lost, causing the blades to move to low pitch at a rate too rapid for the prop pitch lock to operate effectively. The prop oversped, causing the blades to separate in overstress.

PROBABLE CAUSE: "The failure of the right propeller due to the omission of the torque piston nitriding process during manufacture, and the failure of manufacturing quality control to detect the omission."

Bronnen:

Official accident investigation report

investigating agency:	National Transport Safety Bureau (NTSB) - USA
report status:	Final
report number:	NTSB File 1-0001
report released:	26-FEB-1968
duration of investigation:	358 days (11.9 months)
download report:	Lake Central Airlines, Inc., Allison Prop-Jet Convair 340, N73130, near Marseilles, Ohio, March 5, 1967 (NTSB File 1-0001)

Veiligheidsmaatregelen

NTSB issued 3 Safety Recommendations

Show all AD's and Safety Recommendations

Foto's

Kaart

Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Columbus-Port Columbus International Airport, OH en Toledo-Express Airport, OH bedraagt 191 km (120 miles).

languages:

Convair CV-580

2^e ongeval
182 built
zwaarste ongeval (toen het plaatsvond)
2^e zwaarste ongeval (op dit moment)

safety profile

Verenigde Staten

50^e zwaarste ongeval (toen het plaatsvond)
89^e zwaarste ongeval (op dit moment)

»safety profile

Issued: 30-MAR-1967	To:	A-67-014
WE RECOMMEND THAT THE PITCH LOCK CAPABILITY WITH RESPECT TO RATE OF BLADE ANGLE CHANGE BE RELIABLY ESTABLISHED AND CORRELATED WITH MAXIMUM BLADE ANGLE CHANGE RATES THAT MIGHT BE ENCOUNTERED, AND IF A DEFICIENCY IS FOUND TO EXIST, THAT IT BE CORRECTED. IT IS FURTHER SUGGESTED THAT THIS MATTER BE TREATED WITH THE GREATEST POSSIBLE URGENCY. (Closed - Acceptable Action)
Issued: 18-APR-1967	To:	A-67-017
IT IS RECOMMENDED THAT THE FEDERAL AVIATION ADMINISTRATION REVIEW IN DEPTH THE MANUFACTURING PROCESS AND QUALITY CONTROL SYSTEM AT ALLISON TO INSURE EFFECTIVE QUALITY CONTROL. (Closed - Acceptable Action)
Issued: 11-JUL-1967	To:	A-67-019
THE BOARD BELIEVES THAT THE BASIC ELECTRICAL SYSTEM AS INSTALLED ON ALLISON PROP-JET CONVAIR AIRCRAFT CONSTITUTES A POTENTIAL HAZARD TO SAFE OPERATION. THEREFORE, THE BOARD RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION CONDUCT AN ANALYSIS OF THIS ELECTRICAL SYSTEM AND REQUIRE SUCH MODIFICATIONS AS MAY BE INDICATED TO CORRECT THIS CONDITION. (Closed - Acceptable Action)