Is it making any funny sounds?....
C-FIGS, a Cessna 337 aircraft operated by MAG Aerospace Canada Corp. was conducting a local
VFR fire patrol flight from La Ronge/Barber Field Airport (CYVC), SK. When approximately 40 NM
North-northwest of CYVC, the pilot observed an RPM fluctuation on the front engine which
worsened over time. The pilot then turned back toward CYVC and consulted the quick reference
handbook emergency checklist (QRH). While actioning the "propeller overspeed/governor"
checklist, the front engine was inadvertently shut down. The pilot restarted the front engine and
was unsure of the front engine's performance. He declared a PAN PAN to receive priority through
restricted airspace and the aircraft landed at 0048 UTC in CYVC without further incident.
The operator's maintenance department found a broken tachometer wire on the right magneto of
the front engine. The wire was repaired with a new terminal end, and a satisfactory function test
carried out. The aircraft was returned to service. The operator will be amending the QRH to have
the "low, high/fluctuating RPM gauge" checklist appear before the propeller "overspeed/governor
failure" checklist.
Listen to the Engine
Moderators: sky's the limit, sepia, Sulako, lilfssister, North Shore
Re: Listen to the Engine
It all depends on when it calves. There is about a 10 second window in which the gear isn't raised on positive rate, but on a target airspeed. If I remember correctly, it has to do with the wheels turning broadside to the airflow, creating drag that might show up at the worst possible time, a power loss.
I think you didn't raise the gear until about 104 kts.
Good judgment comes from experience. Experience often comes from bad judgment.
Re: Listen to the Engine
I was thinking more in terms of driving it around the airport. It’s one of those things that probably shouldn’t have been made.


