G4 0 flap TO

[Flight_Cru]

I am a little behind the game here, please help assist my memory.

I was certain the G4 SP had no performance data published for ZERO flap take off.

Is there an unofficial set of data.

A friend of mine was reliably informed !!!! that they witnessed a G4SP operated by a very respectable corporate company, depart with ZERO flap.

They are in the business, but might be mistaken.

Thanks boffins.

[FLEXJET]

Normal GIV Takeoff:

The following procedures are recommended for the Gulfstream IV
and V aircraft for either an Autothrottle engaged or Manual takeoff:

...
1) Utilize EPR (Min/Rated or Flex) and 20° flaps for all takeoffs.
...

------------------------------------------------------------------------------------

In Santa Ana John Wayne/Orange County (KSNA) for example, you have a "Quiet Flying" procedure which asks to perform a flaps retraction to 0° at 500 feet AGL.

[23G-IV]

G-IV 0 Flaps T/O

If you have a flap malfunction that requires movement of aircraft with less than 10 flaps (min for t/o), Gulfstream has unpublished numbers they can give you for a one time t/o. They will only issue you them after a ferry permit or the like is obtained. You will get a fax with all perf numbers and runway required for the particular day.

[Flight_Cru]

better late then never

Thank you for the response, I have been to SAV since this incident and received the same answer.

However the incident in question, the driver did not take the steps mentioned...

Many thanks

[VP TAA]

FLT_ CRW
Were the slats extended? why I ask is that a zero flap T/O with slats fully extended was fairly routine on the DC9 30/50 we used to fly
Regards VP TAA

[hawk37]

the g4 does not have slats. In fact, none of the G series has any leading edge devices.
Hawk

[AA717driver]

VP TAA--Doing the 0-Flap take off in the DC-9-50 required a LOT of runway! Some of our more "literal" pilots did not extend the slats...

In any event, not for the faint of heart! TC