Posts: 21
Joined: Sun May 27, 2012 4:21 am

Different Take Off Weight Limit

Sat Jan 12, 2013 10:28 pm

I am going to get my endorsement on an Aerocommander AC500S shortly and I noticed in the flight manual it gives a different max take off weight for IFR.

The MTOW is less for IFR than VFR, why would it be less?

The only thing I can think of is to do with penetration speeds but wouldn't it be better to be heavier and have a higher speed?

Posts: 95
Joined: Thu Dec 06, 2012 10:24 am

RE: Different Take Off Weight Limit

Tue Jan 15, 2013 2:42 pm

I don't know enough about the type to make an authoritative statement, but the first thing that came to mind was simply maneuvering speeds and rate of climb.

Instrument departures under IFR can have climb performance requirements associated with them, perhaps at the VFR MTOW, climb performance is degraded to a point that is unsuitable.

I'm not sure I follow your point about penetration speeds. Rough air is penetrated under VFR too?
User avatar
Posts: 10947
Joined: Thu Dec 14, 2006 1:42 pm

RE: Different Take Off Weight Limit

Tue Jan 15, 2013 4:29 pm

Quoting HarryStanhope (Thread starter):

Sounds like CAO 20.7.4 paragraph 8 requirement.

8.1 Multi-engined aeroplanes engaged in charter operations under the Instrument Flight Rules or aerial work operations under the Instrument Flight Rules must have the ability to climb with a critical engine inoperative at a gradient of 1% at all heights up to 5 000 feet in the standard atmosphere in the following configuration:
Human rights lawyers are "ambulance chasers of the very worst kind.'" - Sky News

Who is online

Users browsing this forum: rbretas and 2 guests

Popular Searches On Airliners.net

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos