×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

MIL-A-008865 vs MIL-A-8865B

MIL-A-008865 vs MIL-A-8865B

MIL-A-008865 vs MIL-A-8865B

(OP)
Does anyone knows if MIL-A-8865B is the superseding document for MIL-A-008865? There are no history for MIL-A-008865 except that it is cancelled with no replacement. Anyone out there have a copy of MIL-A-008865?

Thank you

Regards
aeu

RE: MIL-A-008865 vs MIL-A-8865B

(OP)
Thanks rb1957, I have a copy of MIL-A-8865B but not MIL-A-008865. The reason for this verification is because the load factors for the litter installation for the MIL-A-008865 is supposedly greater than those specified in MIL-A-8865B. I currently do not have documentation to prove this because all I have is an extract from a Company's Published manual.

          MIL-A-8865              MIL-A-008865
FWD           8G                        20G
AFT           8G                        10G
Lateral       1.5G                      10G
Up            2G                        10G
Down          4.5G                      20G

I am not convinced that MIL-A-8865B supersedes MIL-A-008865 because the face sheet of MIL-A-8865 does not indicate that it does supersedes the requirements in MIL-A-008865.

Any ideas where to get a copy of MIL-A-008865 which has been cancelled? Or is it relevant anymore?

RE: MIL-A-008865 vs MIL-A-8865B

i really think that 008865 is the same as 8865.

the inertia factors you've quoted for 008865 are in 8865B under seats (table 1) rather than litters (para 3.2.2).

maybe the original installation used these higher factors to be conservative ?

RE: MIL-A-008865 vs MIL-A-8865B

alexeu,

Original issue of MIl-A-008865A cover page upper corner reads:

USED IN LIEU OF MIL-A-8865 (ASG).

Cancellation page of MIL-A-008865A reads;

FOR FUTURE PROCUREMENT, SEE MIL-A-87221.

Continuing on, MIL-A-87221 has been cancelled and reads;

FUTURE AQUISITIONS SHOULD REFER TO AFGS-87221A.


Regards,
mnliaison


RE: MIL-A-008865 vs MIL-A-8865B

(OP)
MNLiaison

Thanks for the valuable feedback. Do you have any idea how I can get a PDF copy of the AFGS-87221A document?

Thank you.

RE: MIL-A-008865 vs MIL-A-8865B

the ASSIST web-site has this doc (search for 87221).  Apparently this is superceded by JSSG-2006, which is also on the website (as a downloadable pdf).

i've searched this for "litter" loads, as this is what i think you're interested in.  the result is on pg289 with inertia factors as per 8865B (as you've quoted above).

RE: MIL-A-008865 vs MIL-A-8865B

alexeu

MIL-A-8865 [1960]
3.2.2 Litter installation loads. For litter installations, the following load factors acting separately shall apply to a 25O-pound litter load:
Longitudinal: 8.0 forward
Lateral:      1.5 to right and to left
Vertical      4.5 down and 2.0 up

MIL-A-8865A [1971]
3.3.3 Litter installation loads. For litter installations, the following load factors acting separately shall apply to a 25O-pound litter load:
Longitudinal: 9.0 forward and 1.5 Aft
Lateral:      1.5 to right and to left
Vertical      4.5 down and 2.0 up

MIL-A-8865B [1983]
3.2.2 Litter installation loads. For litter installations, the following load factors acting separately shall apply to a 25O-pound litter load:
Longitudinal: 8.0 forward
Lateral:      1.5 to right and to left
Vertical      4.5 down and 2.0 up

FAA AC135-15 EMS Aircraft [AC135-14 EMS Helos]
Chapter 1 Para 1…
b.  Additional Equipment/General. The applicant should identify in their initial application, any specialized equipment that may be used in EMS operations. The equipment should be installed in the aircraft in an acceptable method (using data approved by the aircraft manufacturer, an EMS equipment manufacturer, or the FAA Administrator). The FAA may approve add-on equipment installation after evidence of airborne test results are submitted from the aircraft operator, the Department of Transportation (DOT), Department of Defense, or an independent testing organization. Any equipment installed aboard the aircraft should comply with the data in AC 43.13-2A, Chapter 1, paragraph 2(d) and 3, and Chapter 12, paragraph 243(a), and withstand the following static loads in accordance with AC 43.13-1A:
(1) 9.O-G forward, 6.6-G downward, and 3.O-G upward, and 1.5-G sideward; and
(2) tie-down, 13.5-G forward, 9.9-G downward, 4.5-G upward, 2.25-G sideward.

Regards, Wil Taylor

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources