EFTA00367580.pdf
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From:
To:
Subject: Fwd: Bedford GIV crash update
Date: Thu, 19 Jun 2014 01:48:47 +0000
lane-Images: image00 1 jpg; image001(1)jpg
FYI
Sent from my iPhone
Begin forwarded message:
From: Larry Visoski
Date: June 18, 2014, 7:27:30 PM CDT
To:
, Darren Indyke
>, Rich Kahn
Subject: Fwd: Bedford GIV crash update
JE told me to order Paris charts, sounds like a definite maybe to Paris Saturday night
Thx
Sent from my iPhone
Begin forwarded message:
From: "jeffrey E." <jeevacation@gmail.com>
Date: June 18, 2014 at 8:05:15 PM AST
To: Larry Visoski
Subject: Re: Bedford GIV crash update
order the paris charts
On Wed, Jun 18, 2014 at 6:36 PM, Larry Visoski c
wrote:
Preliminary GIN' Crash Report Focuses on Flaps and Gust Lock
EFTA00367580
Piiftp://c.o0bg.com/rf/image_960w/Boston/201
1-
2020/2014/06/17/BostonGlobe.cotn/Metro/Imag
es/crash-big-13313.jpg
The NTSB's preliminary report into the crash of a Gulfstream IV during takeoff roll at Bedford Hanscom
Field near Boston on May 31 revealed a number of inconsistencies. On June 13, investigators reported that
while the flap handle on the jet was set to the "flaps 10" position, the flight data recorder indicated the flaps
were set to the "flaps 20" position.
Speculation also focused on the position of the aircraft's gust lock before takeoff. On that subject, the report
said, "The flight data recorder (FDR) data revealed the elevator control surface position during the taxi and
takeoff was consistent with its position if the gust lock was engaged." The GIV's control lock will not
normally allow the thrust levers to be advanced beyond six-percent thrust with the lock engaged. "The gust
lock handle, located on the right side of the control pedestal, was however found in the forward (OFF)
position and the elevator gust lock latch was disengaged," concluded investigators. The Gulfstream's FDR
did not record any movement of the flight controls by the crew before takeoff.
AIN spoke with a GIV pilot based in the northeast U.S. who did not wish to be identified but offered some
insights on the aircraft. "The position of the controls recorded by the FDR was pretty consistent with where
the flight controls normally rest during taxiing," he said. On this basis, the gust lock theory would seem less
plausible.
"You normally don't even start the engines with the control lock in place," the pilot added. He explained
that part of the Gulfstream takeoff procedure includes feeling the controls lighten as air moves across the
tail surfaces early in the takeoff roll. "If we don't feel that by 60 knots or so, it's an automatic abort," he
added, while also questioning the takeoff speeds mentioned in the report. "At a light [takeoff] weight, the
VI speed of the GIV should have been about 118 knots," he said, "with rotation at about 124." This
prompted him to question why the aircraft reached a speed of 165 knots before the crew aborted the takeoff
http://www.ainonline.com/comment/10536
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Timoth Boland
Senior Vice President - Western Zone Manager I Global Aerospace Inc.
EFTA00367581
-aero.com>
Date: Jun 18, 2014 10:28 AM
Subject: GIV Prelim
To: "Neal Young
Cc:
Preliminary GIV Crash Report Focuses on Flaps and Gust Lock
Rliftp://c.o0bg.com/rf/image_960w/Boston/201
1-
2020/2014/06/17/BostonGlobe.corn/Metro/Imag
es/crash-big-13313.jpg
The NTSB's preliminary report into the crash of a Gulfstream IV during takeoff roll at Bedford Hanscom
Field near Boston on May 31 revealed a number of inconsistencies. On June 13, investigators reported that
while the flap handle on the jet was set to the "flaps 10" position, the flight data recorder indicated the flaps
were set to the "flaps 20" position.
Speculation also focused on the position of the aircraft's gust lock before takeoff. On that subject, the report
said, "The flight data recorder (FDR) data revealed the elevator control surface position during the taxi and
takeoff was consistent with its position if the gust lock was engaged." The GIV's control lock will not
normally allow the thrust levers to be advanced beyond six-percent thrust with the lock engaged. "The gust
lock handle, located on the right side of the control pedestal, was however found in the forward (OFF)
position and the elevator gust lock latch was disengaged," concluded investigators. The Gulfstream's FDR
did not record any movement of the flight controls by the crew before takeoff.
AIN spoke with a GIV pilot based in the northeast U.S. who did not wish to be identified but offered some
insights on the aircraft. "The position of the controls recorded by the FDR was pretty consistent with where
the flight controls normally rest during taxiing," he said. On this basis, the gust lock theory would seem less
plausible.
"You normally don't even start the engines with the control lock in place," the pilot added. He explained
that part of the Gulfstream takeoff procedure includes feeling the controls lighten as air moves across the
tail surfaces early in the takeoff roll. "If we don't feel that by 60 knots or so, it's an automatic abort," he
added, while also questioning the takeoff speeds mentioned in the report. "At a light [takeoff] weight, the
VI speed of the GIV should have been about 118 knots," he said, "with rotation at about 124." This
prompted him to question why the aircraft reached a speed of 165 knots before the crew aborted the takeoff.
EFTA00367582
http://www.ainonl ine.comicomment/ I 0536
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Timothy Boland I Senior Vice President - Western Zone Manager I Global Aerospace Inc.
Sent from my inone
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EFTA00367583
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| Filename | EFTA00367580.pdf |
| File Size | 216.9 KB |
| OCR Confidence | 85.0% |
| Has Readable Text | Yes |
| Text Length | 6,250 characters |
| Indexed | 2026-02-11T16:08:51.795796 |