Listen to the Engine

Topics related to accidents, incidents & over due aircraft should be placed in this forum.

Moderators: sky's the limit, sepia, Sulako, lilfssister, North Shore

Post Reply
pelmet
Top Poster
Top Poster
Posts: 7975
Joined: Tue Jun 14, 2005 2:48 pm

Listen to the Engine

Post by pelmet »

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.
---------- ADS -----------
 
User avatar
‘Bob’
Rank (9)
Rank (9)
Posts: 1115
Joined: Fri Apr 23, 2021 10:19 am

Re: Listen to the Engine

Post by ‘Bob’ »

I think the 337 is safer on one…..
---------- ADS -----------
 
cncpc
Rank (9)
Rank (9)
Posts: 1714
Joined: Tue Oct 19, 2010 10:17 am

Re: Listen to the Engine

Post by cncpc »

‘Bob’ wrote: Tue Aug 26, 2025 4:27 pm I think the 337 is safer on one…..
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.
---------- ADS -----------
 
Good judgment comes from experience. Experience often comes from bad judgment.
User avatar
‘Bob’
Rank (9)
Rank (9)
Posts: 1115
Joined: Fri Apr 23, 2021 10:19 am

Re: Listen to the Engine

Post by ‘Bob’ »

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.
---------- ADS -----------
 
Post Reply

Return to “Accidents, Incidents & Overdue Aircraft”