MightyFalcon From Oman, joined Jun 2001, 384 posts, RR: 9 Posted (14 years 1 month 3 weeks 1 day 5 hours ago) and read 1856 times:
I've seen numbers of times the 2 Gulstream G4s based where I work taxxing with one thrust reverser deployed; I have noticed as well that it was always the starboard one, although this might just be a coincidence. I don't remember having noticed this on any other bizzjet.
Is it a procedure specific to the Gulfstreams or have you seen it on other types? Would you have any explanation for this?
Thanks to all of you answering. I look forward to finding out.
Navion From United States of America, joined May 1999, 1022 posts, RR: 1
Reply 1, posted (14 years 1 month 3 weeks 1 day 4 hours ago) and read 1831 times:
The G4 is not the only jet which often needs to taxi with one thrust reverser deployed to offset the high residual idle thrust of the engines. I have seen the Embraer ERJ's do this also. While taxiing a G4, the idle thrust of the 2 engines will cause it to accelerate too fast so one thrust reverser is deployed. You will usually find the reverser is deployed on and off as speed is needed to be retarded. I have not seen a reverser deployed for the complete taxi. Hope this helps.
Cfalk From , joined Dec 1969, posts, RR:
Reply 2, posted (14 years 1 month 3 weeks 1 day 4 hours ago) and read 1822 times:
In Geneva, I see that a LOT, especially with Fokker 70s and 100s, business jets, and sometimes with larger planes like A310s. But I don't see it every time, but of course, I don't see the plane during its entire taxi run.
I suppose testing the thrust reversers is part of the pre-takoff checklist.
MightyFalcon From Oman, joined Jun 2001, 384 posts, RR: 9
Reply 4, posted (14 years 1 month 3 weeks 1 day 2 hours ago) and read 1787 times:
Many thanks, Navion!
This could be the explanation and, as you were guessing, the thrust reverser is not deployed permanently during the whole taxi; on the other hand, it isn't for sure just a check as it's often used for longer than a few seconds.