What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
The pilot stated he noticed a problem with the aircraft engine while in cruise flight approximately 25 nautical miles west of Cape Girardeau, Missouri. He checked the engine oil pressure gage and saw the pressure dropping towards the bottom end of the green arc. He communicated with memphis center they had a problem, declared an emergency, and asked to divert back to Cape Girardeau airport. The pilot stated that as they positioned themselves for a high left base leg for runway 28, the engine failed completely and some smoke started to enter the cockpit, but they were able to reduce the smoke by closing the air vents. They were able to lower the gear normally and landed on the runway without any further complications.
Inspection of the aircraft revealed a broken hose assembly/oil pressure line running from the engine casing to the cockpit oil pressure gage. This part is listed in Beechcraft parts manual as part. No. AN6270-2-12-1/2 which applies to this aircraft?s ser. No. CD-821.
The metal attachment fitting on the hose end that attaches to the engine casing was found separated from the flexible rubber hose allowing the engine oil to be pumped out of the engine and out the aft lower engine cowling causing the subsequent engine failure. Fresh oil was observed streaming back beginning at the aft lower engine cowling all along the underside of the empennage.
There was damage and an exit hole at the top left center portion of the main engine casing. The top left forward engine cowling intake and the back of one of the propeller blades sustained minor damage from the exiting engine pieces. The aircraft engine casing was substantially damaged. No further damage of the airframe was observed or noted.
The aircraft and engine logbooks were located with the aircraft. The current engine tachometer indicated 3278.52 hours. The engine total time is calculated as 762.42 hours since factory re-manufacture. The airframe and engine logbook recorded an annual inspection was completed on 7/10/18. The aircraft had a standard airworthiness certificate issued October 1, 1975 on board in addition to an aircraft registration certificate that indicated an expiration date of December 31, 2019.
As the FAA filed it
THE PILOT STATED HE NOTICED A PROBLEM WITH THE AIRCRAFT ENGINE WHILE IN CRUISE FLIGHT APPROXIMATELY 25 NAUTICAL MILES WEST OF CAPE GIRARDEAU, MISSOURI. HE CHECKED THE ENGINE OIL PRESSURE GAGE AND SAW THE PRESSURE DROPPING TOWARDS THE BOTTOM END OF THE GREEN ARC. HE COMMUNICATED WITH MEMPHIS CENTER THEY HAD A PROBLEM, DECLARED AN EMERGENCY, AND ASKED TO DIVERT BACK TO CAPE GIRARDEAU AIRPORT. THE PILOT STATED THAT AS THEY POSITIONED THEMSELVES FOR A HIGH LEFT BASE LEG FOR RUNWAY 28, THE ENGINE FAILED COMPLETELY AND SOME SMOKE STARTED TO ENTER THE COCKPIT, BUT THEY WERE ABLE TO REDUCE THE SMOKE BY CLOSING THE AIR VENTS. THEY WERE ABLE TO LOWER THE GEAR NORMALLY AND LANDED ON THE RUNWAY WITHOUT ANY FURTHER COMPLICATIONS.
INSPECTION OF THE AIRCRAFT REVEALED A BROKEN HOSE ASSEMBLY/OIL PRESSURE LINE RUNNING FROM THE ENGINE CASING TO THE COCKPIT OIL PRESSURE GAGE. THIS PART IS LISTED IN BEECHCRAFT PARTS MANUAL AS PART.NO. AN6270-2-12-1/2 WHICH APPLIES TO THIS AIRCRAFT?S SER. NO. CD-821.
THE METAL ATTACHMENT FITTING ON THE HOSE END THAT ATTACHES TO THE ENGINE CASING WAS FOUND SEPARATED FROM THE FLEXIBLE RUBBER HOSE ALLOWING THE ENGINE OIL TO BE PUMPED OUT OF THE ENGINE AND OUT THE AFT LOWER ENGINE COWLING CAUSING THE SUBSEQUENT ENGINE FAILURE. FRESH OIL WAS OBSERVED STREAMING BACK BEGINNING AT THE AFT LOWER ENGINE COWLING ALL ALONG THE UNDERSIDE OF THE EMPENNAGE.
THERE WAS DAMAGE AND AN EXIT HOLE AT THE TOP LEFT CENTER PORTION OF THE MAIN ENGINE CASING. THE TOP LEFT FORWARD ENGINE COWLING INTAKE AND THE BACK OF ONE OF THE PROPELLER BLADES SUSTAINED MINOR DAMAGE FROM THE EXITING ENGINE PIECES. THE AIRCRAFT ENGINE CASING WAS SUBSTANTIALLY DAMAGED. NO FURTHER DAMAGE OF THE AIRFRAME WAS OBSERVED OR NOTED.
THE AIRCRAFT AND ENGINE LOGBOOKS WERE LOCATED WITH THE AIRCRAFT. THE CURRENT ENGINE TACHOMETER INDICATED 3278.52 HOURS. THE ENGINE TOTAL TIME IS CALCULATED AS 762.42 HOURS SINCE FACTORY RE-MANUFACTURE. THE AIRFRAME AND ENGINE LOGBOOK RECORDED AN ANNUAL INSPECTION WAS COMPLETED ON 7/10/18. THE AIRCRAFT HAD A STANDARD AIRWORTHINESS CERTIFICATE ISSUED OCTOBER 1, 1975 ON BOARD IN ADDITION TO AN AIRCRAFT REGISTRATION CERTIFICATE THAT INDICATED AN EXPIRATION DATE OF DECEMBER 31, 2019.
Other reports on N829T · 2
Matched to the same aircraft by N-number and date.