OpenAirDocs.org

19940114004339I

Incident
Open the Markdown

FAA incident report · Gulstm 500-B · Milwaukee, WI · January 14, 1994

FAA Aviation Safety Information Portal

© OpenStreetMap
Date
January 14, 1994 · 18:30 local
Place
Milwaukee, WI
Airport
General Mitchell Field
Phase of flight
Normal Cruise
Operating rules
General operating rules (Part 91)
Aircraft
N801K
Reported as
Gulstm 500B
Reported engine
Lycoming IO540E1B5
People aboard
2
Fatal injuries
0
Pilot’s flight hours
12,200 total40 in this make and model25 in the last 90 days
N801KRegistered now · Aero Commander 500-BS/N 500B-1094-57 · Built 1961Airframe modelAero Commander 500-BEngine modelLycoming TI0-540 seriesTurbo-prop

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry 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.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

Narrative: on January 14, 1994, aero commander 500B, N801K, departed clarksville, TN on an IFR flight plan to Milwaukee, WI. At approximately 1830 pm, while enroute at an altitude of 9,000 feet, the pilot in command observed a rise in oil pressure beyond the red line of the left engine. Visual meterological conditions prevailed at this time, the outside air temperature was -15 degrees f, and thirty minutes previoius to this, the aircraft had flown through visible moisture for approximately 5 to 7 minutes. Power on this engine was reduced to 18-20 inches of map followed shortly thereafter by an abrupt drop of this pressure. The left engine was shut down, propeller feathered, assistance from chicago ATC center requested for vectors to Milwaukee, and an uneventful landing was accomplished at General Mitchell international airport. Inspection of this aircraft revealed the left engine propeller flange seal had ruptured at the three o'clock position allowing engine oil to escape. Based upon the extremely cold temperatures at the time of this incident and the type of failure encountered, privacy data omitted a malfunction or defect report to be submitted by the mechanic performing the repair.

As the FAA filed it

NARRATIVE: ON JANUARY 14, 1994, AERO COMMANDER 500B, N801K, DEPARTED CLARKSVILLE, TN ON AN IFR FLIGHT PLAN TO MILWAUKEE, WI. AT APPROXIMATELY 1830 PM, WHILE ENROUTE AT AN ALTITUDE OF 9,000 FEET, THE PILOT IN COMMAND OBSERVED A RISE IN OIL PRESSURE BEYOND THE RED LINE OF THE LEFT ENGINE. VISUAL METEROLOGICAL CONDITIONS PREVAILED AT THIS TIME, THE OUTSIDE AIR TEMPERATURE WAS -15 DEGREES F, AND THIRTY MINUTES PREVIOIUS TO THIS, THE AIRCRAFT HAD FLOWN THROUGH VISIBLE MOISTURE FOR APPROXIMATELY 5 TO 7 MINUTES. POWER ON THIS ENGINE WAS REDUCED TO 18-20 INCHES OF MAP FOLLOWED SHORTLY THEREAFTER BY AN ABRUPT DROP OF THIS PRESSURE. THE LEFT ENGINE WAS SHUT DOWN, PROPELLER FEATHERED, ASSISTANCE FROM CHICAGO ATC CENTER REQUESTED FOR VECTORS TO MILWAUKEE, AND AN UNEVENTFUL LANDING WAS ACCOMPLISHED AT GENERAL MITCHELL INTERNATIONAL AIRPORT. INSPECTION OF THIS AIRCRAFT REVEALED THE LEFT ENGINE PROPELLER FLANGE SEAL HAD RUPTURED AT THE THREE O'CLOCK POSITION ALLOWING ENGINE OIL TO ESCAPE. BASED UPON THE EXTREMELY COLD TEMPERATURES AT THE TIME OF THIS INCIDENT AND THE TYPE OF FAILURE ENCOUNTERED, ^PRIVACY DATA OMITTED^ A MALFUNCTION OR DEFECT REPORT TO BE SUBMITTED BY THE MECHANIC PERFORMING THE REPAIR.