Welcome to Flightinfo.com

  • Register now and join the discussion
  • Friendliest aviation Ccmmunity on the web
  • Modern site for PC's, Phones, Tablets - no 3rd party apps required
  • Ask questions, help others, promote aviation
  • Share the passion for aviation
  • Invite everyone to Flightinfo.com and let's have fun

IFR Fuel Reserves?

Welcome to Flightinfo.com

  • Register now and join the discussion
  • Modern secure site, no 3rd party apps required
  • Invite your friends
  • Share the passion of aviation
  • Friendliest aviation community on the web

UndauntedFlyer

Ease the nose down
Joined
Feb 26, 2006
Posts
1,062
I ran into a guy today that sez 30 minutes (VFR reserves) of reserve fuel is all that's required for an IFR flight if the weather is clear (no clouds). He says that's what the regulation says, and sure enough when I re-read it, it does sort of say that. I know that 45 minutes is really required for an IFR flight, but doesn't the regulation say "IFR conditions" rather than "under IFR"? Any comments on this?


Sec. 91.167 - Fuel requirements for flight in IFR conditions.
(a) No person may operate a civil aircraft in IFR conditions unless it carries enough fuel (considering weather reports and forecasts and weather conditions) to --
(1) Complete the flight to the first airport of intended landing;
(2) Except as provided in paragraph (b) of this section, fly from that airport to the alternate airport; and (3) Fly after that for 45 minutes at normal cruising speed.
 
if your quote is correct then it's based on IFR conditions.

So then it is your belief that if the weather is VFR and an IFR pilot on an IFR flight plan will not encounter any IFR weather conditions, then that pilot does not need to Fight Plan for 45 minutes of reserve fuel?
 
no, im basing it on the referenced reg you posted.....is that what the reg says? or is that what you think it says.

Im not gonna go look it up.

if the reg you referenced is what it really says then yes, mr.pilot don't need the 45 minute reserver if flying in VFR conditions.

the regulation appears to be very clear and VFR/IFR weather conditions is also clear.
 
You are confusing IFR with IMC. IFR refers to operating under Instrument Flight Rules, and each time you file and fly on an IFR flight plan, that is what you're doing, and you need a 45 minute reserve, regardless of whether it's IMC or VMC outside.
 
You are confusing IFR with IMC. IFR refers to operating under Instrument Flight Rules, and each time you file and fly on an IFR flight plan, that is what you're doing, and you need a 45 minute reserve, regardless of whether it's IMC or VMC outside.
Nope...it says "IFR conditions", which is basically IMC, not "IFR". If you're not in the clouds, you don't have to have 45 minutes. Doesn't even say "if you're not going to enter the clouds", because it's not a "departure" reg like the VFR fuel reserve reg.

For flight in "VFR Conditions":
(a) No person may begin a flight in an airplane under VFR conditions....
(note that there's not even a requirement to have ANY fuel in the tanks when you land, so long as you BEGIN the flight with legal reserves)

On the other hand, for flight in "IFR Conditions":
(a) No person may operate a civil aircraft in IFR conditions....
So, basically, as soon as you fly out of the last cloud on your route, you can dump fuel so as to land with dry tanks at your destination and still be legal.:eek: (well, other than "careless" or "reckless"...)
 
Last edited:
"IFR conditions means weather conditions below the minimum for flight under visual flight rules." as defined in Part 1.1.
 
I ran into a guy today that sez 30 minutes (VFR reserves) of reserve fuel is all that's required for an IFR flight if the weather is clear (no clouds). He says that's what the regulation says, and sure enough when I re-read it, it does sort of say that. I know that 45 minutes is really required for an IFR flight, but doesn't the regulation say "IFR conditions" rather than "under IFR"? Any comments on this?


Sec. 91.167 - Fuel requirements for flight in IFR conditions.
(a) No person may operate a civil aircraft in IFR conditions unless it carries enough fuel (considering weather reports and forecasts and weather conditions) to --
(1) Complete the flight to the first airport of intended landing;
(2) Except as provided in paragraph (b) of this section, fly from that airport to the alternate airport; and (3) Fly after that for 45 minutes at normal cruising speed.

If there's no IMC conditions, there's no IFR fuel reserve requirements. You'll need to comply with VFR fuel reserves though.

The slick attorneys that write this stuff for the FAA should have written it like this:

Sec. 91.167 - Fuel requirements for flight while operating under IFR.
(a) No person may operate a civil aircraft on an IFR flight plan in IMC conditions unless it carries enough fuel (considering weather reports and forecasts and weather conditions) to --
(1) Complete the flight to the first airport of intended landing;
(2) Except as provided in paragraph (b) of this section, fly from that airport to the alternate airport; and
(3) Fly after that for 45 minutes at normal cruising speed
 
The slick attorneys that write this stuff for the FAA should have written it like this

No because then one would be allowed to depart in Class G in IMC with no fuel requirements. Slick lawyers at the FAA get it right sometimes.
 

Latest resources

Back
Top