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G4 Taxiing With ONE Thrust Reverser Deployed..?  
User currently offlineMightyFalcon From Oman, joined Jun 2001, 384 posts, RR: 8
Posted (14 years 11 months 2 weeks 6 days 18 hours ago) and read 2163 times:

Hi everyone,

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.

The sky has no limit...
4 replies: All unread, jump to last
User currently offlineNavion From United States of America, joined May 1999, 1033 posts, RR: 1
Reply 1, posted (14 years 11 months 2 weeks 6 days 17 hours ago) and read 2138 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.

User currently offlineCfalk From , joined Dec 1969, posts, RR:
Reply 2, posted (14 years 11 months 2 weeks 6 days 17 hours ago) and read 2129 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.


User currently offlineCAETravlr From United States of America, joined Oct 2000, 922 posts, RR: 1
Reply 3, posted (14 years 11 months 2 weeks 6 days 17 hours ago) and read 2112 times:

I know this wasn't originally my post, but thanks for the intelligent post Navion! It is quite refreshing to see!

A woman drove me to drink and I didn't have the decency to thank her. - W.C. Fields
User currently offlineMightyFalcon From Oman, joined Jun 2001, 384 posts, RR: 8
Reply 4, posted (14 years 11 months 2 weeks 6 days 15 hours ago) and read 2094 times:

Many thanks, Navion!  Big thumbs up
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.

The sky has no limit...
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