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Search: Posts Made By: DongJoon Choi
Showing results 1 to 31 of 31
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Forum: Engineers & Technicians
19th Nov 2011, 00:39
Replies: 3
Views: 5,006
Posted By DongJoon Choi

B737NG ACMS alpha codes

Dear All,

Is there anyone to let me know regarding all ACMS alpha codes like VGTD,VGMX... displayed on CDU and what they mean ?

For example,
VGTD means vertical G touch down.

Regards,
Forum: Engineers & Technicians
17th Oct 2011, 13:04
Replies: 8
Views: 6,717
Posted By DongJoon Choi

Dear all, Thanks for your replies. It is...

Dear all,

Thanks for your replies. It is very informative for me.

Regards,
DongJoon Choi
Forum: Engineers & Technicians
14th Oct 2011, 16:13
Replies: 8
Views: 6,717
Posted By DongJoon Choi

Dear all, There are a lot of contacts which...

Dear all,

There are a lot of contacts which have suffix D and M.

For example, mating end size of M39029/58-360 is 22 but wire barel size is 22D.

I need your help.

Regards,
DongJoon...
Forum: Engineers & Technicians
14th Oct 2011, 02:26
Replies: 8
Views: 6,717
Posted By DongJoon Choi

Connector contact size

What is the difference between 22 and 22D(or 22M) for connector contact size?

What does suffix D and M mean?
Forum: Tech Log
25th Aug 2011, 10:11
Replies: 13
Views: 1,940
Posted By DongJoon Choi

I recommend CFM56-7B. It is the best

I recommend CFM56-7B. It is the best
Forum: Tech Log
22nd Aug 2011, 03:18
Replies: 2
Views: 2,348
Posted By DongJoon Choi

I don't know the answer to your question, but the...

I don't know the answer to your question, but the following statement (extracted from AMM Part I Chapter 21) suggests that the issue is smoke control:

"The air conditioning overboard exhaust...
Forum: Tech Log
10th Aug 2011, 23:40
Replies: 7
Views: 3,192
Posted By DongJoon Choi

Dear ImbracableCrunk, I think maybe that a...

Dear ImbracableCrunk,

I think maybe that a certain altitude you said is 27000ft. FCOM(-800) says that Pressure breathing occurs above 27,000feet. However, I have no idea whether or not the...
Forum: Tech Log
10th Aug 2011, 08:57
Replies: 7
Views: 3,192
Posted By DongJoon Choi

The oxygen regulator has three modes: Normal:...

The oxygen regulator has three modes:
Normal: Red latch on left is up - Gives air/oxygen mix on demand. Use if no fumes are present eg decompression.
100%: Push red latch on left down - Gives 100&...
Forum: Engineers & Technicians
9th Aug 2011, 05:56
Replies: 0
Views: 3,251
Posted By DongJoon Choi

Fuel filter bypass light (B737-800)

Hi there,

Q:

I want to know why FUEL FILTER BYPASS LT do not illuminate when

CDU INPUT MONITORING/FUEL FILTER screen shows the filter is "CLOGGED" even though the affected engine START...
Forum: Tech Log
27th Jul 2011, 01:10
Replies: 25
Views: 5,348
Posted By DongJoon Choi

Negative pressure

Hi all,

It is hard to open the entry door on ground with positive pressure.

How about negative pressure?

If negative pressure exsists on GRD, how does it affect door operation?

Easy?
Forum: Tech Log
19th Jul 2011, 01:13
Replies: 8
Views: 2,543
Posted By DongJoon Choi

For example, B738 landing distance is developed...

For example, B738 landing distance is developed by flight test using MAX MANUAL BRAKING, SPEED BRAKES UP, DRY RUNWAY and AGGRESSIVE TOUCH DOWN TECH. No thrust reverse is used or certified in the...
Forum: Questions
12th Jul 2011, 01:02
Replies: 5
Views: 1,729
Posted By DongJoon Choi

Cabin pressurization problems are caused by...

Cabin pressurization problems are caused by leakage, low bleed duct pressur, OFV and CPC, and defective bleed air system leads to the majority of the defects

If either engine duct pressure is...
Forum: Questions
22nd Jun 2011, 10:55
Replies: 12
Views: 15,214
Posted By DongJoon Choi

Thanks a lot, Northbeach. I would like to tell...

Thanks a lot, Northbeach. I would like to tell you that you are the best.
Forum: Questions
20th Jun 2011, 01:16
Replies: 12
Views: 15,214
Posted By DongJoon Choi

Dear Northbeach, I greatly appreciate you...

Dear Northbeach,

I greatly appreciate you answering my question. Your reponse give me better understanding of relation between packs and recirculation fans operation.

Sir, One more question....
Forum: Tech Log
18th Jun 2011, 11:19
Replies: 9
Views: 3,660
Posted By DongJoon Choi

Hi all, The reason why I would like to know...

Hi all,

The reason why I would like to know the third RA is because of MMEL34-20. Refer to below.

SYSTEM / INTERVAL/ NO. INSTALLED / NO. REQ'D FOR DISPATCH

2) Indications, C, ㅡ, 2

May...
Forum: Tech Log
18th Jun 2011, 04:36
Replies: 9
Views: 3,660
Posted By DongJoon Choi

Hi all, Thanks for your responses. I want...

Hi all,

Thanks for your responses. I want to know the third RA of B737NG in detail. Please let me know.
Forum: Questions
18th Jun 2011, 04:27
Replies: 12
Views: 15,214
Posted By DongJoon Choi

Hi KBPsen, I appreciate you. Does your...

Hi KBPsen,

I appreciate you. Does your reply mean that cockpit is more important than cabin if either recirculation is inoperative.

Please explain in detail
Forum: Questions
17th Jun 2011, 13:47
Replies: 12
Views: 15,214
Posted By DongJoon Choi

Hi Northbeach, Thanks for your reponse.My...

Hi Northbeach,

Thanks for your reponse.My question is why L/H pack must operate when either recirculation fan is inoperative. Why not R/H recirculation?
Forum: Tech Log
17th Jun 2011, 13:32
Replies: 9
Views: 3,660
Posted By DongJoon Choi

Hi friend, Most B737NG do not have the...

Hi friend,

Most B737NG do not have the third RA system as you said. However, I hearded that It can be optionally installed. Two B737NG airplanes my company operate have two raised pads on the...
Forum: Tech Log
15th Jun 2011, 00:05
Replies: 9
Views: 3,660
Posted By DongJoon Choi

Third radio altimeter on B737NG

Hi all,

Is there anybody to let me know optional third RA's purpose and function?

Also, if third radio altimeter system is installed, where is the radio altitude shown?
Forum: Questions
15th Jun 2011, 00:03
Replies: 0
Views: 778
Posted By DongJoon Choi

Third radio altimeter on B737NG

Hi all,

Is there anybody to let me know optional third RA's purpose and function?

Also, if third radio altimeter system is installed, where is the radio altitude shown?
Forum: Engineers & Technicians
7th Jun 2011, 04:22
Replies: 0
Views: 3,067
Posted By DongJoon Choi

Boeing manual D6-1816 Request

Hi all,

I would like to get the D6-1816, for Process Document for Decorative Finishing of Airplane Exteriors.

Is there any body to help me get the document?
Forum: Questions
7th Jun 2011, 04:14
Replies: 0
Views: 2,751
Posted By DongJoon Choi

Boeing D6-1816 manual request

Hi all,

I would like to get the D6-1816, for Process Document for Decorative Finishing of Airplane Exteriors.

Is there any body to help me get the document?
Forum: Engineers & Technicians
4th Jun 2011, 04:37
Replies: 4
Views: 4,754
Posted By DongJoon Choi

Hi born1987, Thanks for your reponse. I...

Hi born1987,

Thanks for your reponse. I agree with your reply. However, there is also (M)maintenance procedures in DDG.

I think there is another philosophy.
Forum: Engineers & Technicians
2nd Jun 2011, 04:09
Replies: 4
Views: 1,526
Posted By DongJoon Choi

B737-800 question about mmel 21-31

Hi there,

I would like know about relation between recirculation fans and packs

Question:

The point(my question) is that why left pack must operate and Pressurized flight must be required...
Forum: Questions
27th May 2011, 06:11
Replies: 12
Views: 15,214
Posted By DongJoon Choi

B737-800 Recirculation fans and packs

Question,

1. I do not know why a recirculation fan(s) affects operation of packs?

2. and Are packs operation only limited on the ground
(because there is only OAT)

Please respond to...
Forum: Tech Log
27th May 2011, 06:10
Replies: 0
Views: 1,031
Posted By DongJoon Choi

B737-800 Recirculation fans and packs

Question,

1. I do not know why a recirculation fan(s) affects operation of packs?

2. and Are packs operation only limited on the ground
(because there is only OAT)

Please respond to...
Forum: Tech Log
22nd May 2011, 09:02
Replies: 2
Views: 3,765
Posted By DongJoon Choi

Is the CFM56-7B26 is flat rated to 26K?

Question :

I heard that cfm56-7b is a flat rated engine. So is the cfm56-7b26 engine is flat rated to 26K?
Forum: Tech Log
22nd May 2011, 08:49
Replies: 2
Views: 7,448
Posted By DongJoon Choi

B737-800 maximum rated thrust and maximum certified thrust

Question :

B737-800 FCOM say that the full rated takeoff thrust for the installed engine is available at a thrust lever position less than the forward stop, the maximum rated thrust is available...
Forum: Engineers & Technicians
17th May 2011, 04:05
Replies: 4
Views: 4,754
Posted By DongJoon Choi

B737's DDG and DDPG of AMM part2

My question is Why the maintenance procedures in DDG and DDPG of AMM part2 is different, and although DDG requires only a operation action(O), Why does DDPG ask for a maintenace action?

B737's...
Forum: Questions
13th May 2011, 10:25
Replies: 1
Views: 9,091
Posted By DongJoon Choi

B737's DDG and DDPG of AMM part2

My question is Why the maintenance procedures in DDG and DDPG of AMM part2 is different, and although DDG requires only a operation action(O), Why does DDPG ask for a maintenace action?

B737's...
Showing results 1 to 31 of 31


 
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