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December 2015

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Subject:
From:
Joyce Koo <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Tue, 1 Dec 2015 23:10:19 -0500
Content-Type:
text/plain
Parts/Attachments:
text/plain (105 lines)
>good catch.  Something fishy there.
         Jk
 From page 18 of 206:
>
> "
> At 2316:44 UTC, the sixth Master Caution triggered by AUTO FLT FAC 1 + 2
> FAULT and followed by FDR signature of alteration of parameters of
> components controlled by FAC 2 such as RTLU 2, Windshear Detection 2 and
> Rudder Travel Limiter Actuator 2. The Auto Pilot (A/P) and the Auto-thrust
> (A/THR) disengaged. Flight control law reverted from Normal Law to
> Alternate Law. The aircraft started to roll to the left up to 54° angle
> of
> bank. Nine seconds after the autopilot disengaged, the right side-stick
> activated. The aircraft roll angle reduced to 9° left and then rolled
> back
> to 53° left. The input on the right side-stick was mostly pitch* up and
> the
> aircraft climbed up to approximately 38,000 feet with a climb rate of up
> to
> 11,000 feet per minute*.
> "
>
> From page 52 of 106
>
> "
> At 2317:41 U*TC the aircraft reached the highest altitude of 38,500 feet
> (ISIS) and largest roll angle at 104° to the left. *The aircraft then
> descended with a rate up to 20,000 feet per minute momentarily afterward
> the rate of descent was recorded at average of 12,000 feet per minute
> until
> the end of recording.
> "
>
> An ascent rate of 11000ft/min is highly unlikely on a commercial aircraft,
> the CFM56-5B fans on this A320 most certainly were not designed to provide
> such thrusts, at close to max takeoff weight. The most likely cause is an
> extreme vertical wind shear (exceeding 10kt per 100ft) which caused a
> vertical stall.
> The solder-joints are a red herring IMHO..
>
> Bhanu
>
> On Tue, Dec 1, 2015 at 9:27 AM, Mike Buetow <[log in to unmask]>
> wrote:
>
>> Here's the report: http://kemhubri.dephub.go.id/knkt/ntsc_home/ntsc.htm
>>
>>
>>
>> Discussion of the electrical short and cracked solder joint begins on
>> page
>> 104.
>>
>>
>>
>>
>>
>> Best,
>>
>>
>>
>> Mike
>>
>>
>>
>> Mike Buetow
>>
>> PCD&F/Circuits Assembly
>>
>> w/m: 617-327-4702
>>
>> @mikebuetow
>>
>>
>>
>> The 2015 CIRCUITS ASSEMBLY *Directory of EMS Companies:*
>> circuitsassembly.com/dems
>>
>>
>> ______________________________________________________________________
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>
>
>
> --
> Bhanu Sood
> Tel: (202) 468-8449
>
> ______________________________________________________________________
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