Ron Parsons wrote in message ...
In article ,
(sid) wrote:

Ron Parsons wrote in message
...
In article ,
The point was that the wing structure and lift capability are there to
be used in a tanker model.

However, these aircraft are to be as stock as possible. Thats
especially true of those being leased. It would be damned expensive to
recertify just a few obsolescent aircraft, so I doubt the AF will
spend the money for additional weight certification.

I've not heard of a DC power loss problem. Which airliner has this?
I should have framed the question this way:
How far would either aircraft fly if there is trouble in the E&E bay
that compromises the electrical system and you are down to DC
power...And then you lose even that?

Lets see... 3 AC generators, 2 batteries, 2 T/R's and a HDG. The E&E
bay is accessible in flight. In the airliner, there are lavatories and a
galley above it, yet I've not heard of any trouble.

There has been trouble. The concentration of elictrical system
components in the E&E bay represensts a potential single point of
failure if damage (as opposed to component failure) occurs there.
Where are the bus ties and shunts? On adjacent racks. Trouble in the
E&E bay, while rare, is a show stopper...Hopefully on a runway... Here
are some examples.
http://www.dft.gov.uk/stellent/group...ty_503084.hcsp
Whilst in cruising flight near Paris during an ETOPS flight from
Zurich to Washington, DC, abnormal warnings appeared on the flight
deck instrumentation and circuit breakers began tripping....

http://www.ntsb.gov/ntsb/brief2.asp?...IA116& akey=1
On May 28, 1996, at 1421 eastern daylight time, a Boeing 767-31AER,
with Dutch registry PH-MCH, and operated by Martinair Holland as
flight 631, received minor damage during an unscheduled landing at
Logan Airport, Boston, Massachusetts....



The KC-135 in the era I'm familiar with could complete it's mission on
battery power alone but it also had 3 AC generators, 1 battery, 2 T/R's
and a HDG.

Will a 767 be able to complete a mission on battery power alone?