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Search: Posts Made By: JohnDixson
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Forum: Rotorheads
27th Nov 2013, 13:39
Replies: 2,609
Views: 876,679
Posted By JohnDixson

Management Impact

SAS, I concur with the direction you have taken with regard to the Shetlands accident explanation ( to come ).
Wanted to offer a comment on your simple, but really on point remark:

"Management...
Forum: Rotorheads
19th Oct 2013, 17:21
Replies: 2,609
Views: 876,679
Posted By JohnDixson

Time History Data

Thanks, HC.

I was referring to the 4/rev excitation, not the 1/rev, but as you wrote, perhaps the sample rate didn't support that range ( I didn't work it out, but am sure its 16-21 Hz or so ).
...
Forum: Rotorheads
19th Oct 2013, 15:53
Replies: 2,609
Views: 876,679
Posted By JohnDixson

Time History

The time-history included in the report raises a few questions.

A 40 degree heading change at the end, yet the pedal position isn't on the trace.

The derived radio altitude rate does not square...
Forum: Rotorheads
2nd Sep 2013, 13:46
Replies: 2,609
Views: 876,679
Posted By JohnDixson

AAIB/NTSB

SAS,

From the NTSB website, a short CV of the Chairperson:

Hersman received B.A. degrees in Political Science and International Studies from Virginia Tech, and an M.S. in Conflict Analysis and...
Forum: Rotorheads
1st Sep 2013, 20:31
Replies: 2,609
Views: 876,679
Posted By JohnDixson

S-65 vs S-92 Cabin Dimension Comparison

SAS,

CH-53D:

Length 30' 0"
Height 6' 6"
Width. 7' 6"

S-92:
Forum: Rotorheads
1st Sep 2013, 14:47
Replies: 2,609
Views: 876,679
Posted By JohnDixson

53D

SAS, there is a version of the 53D with 53E type blades qualified to 50K. Non-US military. Actually, we did a structural flight qual of a standard 53D to 50K prior to that. Same operator as I recall....
Forum: Rotorheads
1st Sep 2013, 13:29
Replies: 2,609
Views: 876,679
Posted By JohnDixson

No re the 53D

HC,

I imagine your comment addressed the economic practicality of the S-65 in that market, given the purchase price and operating costs. That was the issue, and you are correct.

On the flying...
Forum: Rotorheads
1st Sep 2013, 12:04
Replies: 2,609
Views: 876,679
Posted By JohnDixson

Civil S-65

SAS,

Actually there were two different projects, and not directly connected.

There was an S-65 Commercial Compound project, with a large group of design engineers assigned, down at the...
Forum: Rotorheads
30th Aug 2013, 14:30
Replies: 2,609
Views: 876,679
Posted By JohnDixson

S-92 Round Dial Airspeed Background

Colibri,

When the basic display format came up for debate on the 92, SA had been delivering S-76 aircraft with Sperry/Honeywell EFIS, which incorporated tape displays for airspeed and altitude....
Forum: Rotorheads
26th Aug 2013, 18:45
Replies: 2,609
Views: 876,679
Posted By JohnDixson

Data

Thanks, LC. Am I correct in thinking that the pilot statements will be kept private until the CVR/FDR data is examined?
Forum: Rotorheads
26th Aug 2013, 16:31
Replies: 2,609
Views: 876,679
Posted By JohnDixson

Data

Unfamiliar with the UK investigatory process, so am asking if anyone has a guess as to when preliminary data from the recorders will be made public?
Showing results 1 to 11 of 11


 
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