Editing Boeing RC-135 (section)

===RC-135E Lisa Ann / Rivet Amber===
Originally designated C-135B-II, project name Lisa Ann, the RC-135E Rivet Amber was a one-of-a-kind aircraft, equipped with a large 7 MW [[Hughes Aircraft]] phased-array radar system.<ref name="rc135dotcom">{{cite web|url=http://www.rc135.com/0000/INDEX.HTM|title=Raven-1|website=www.rc135.com|access-date=2 February 2019|archive-date=5 February 2019|archive-url=https://web.archive.org/web/20190205174859/http://www.rc135.com/0000/INDEX.HTM|url-status=live}}</ref> Originally delivered as a C-135B, 62-4137 operated from [[Shemya Air Force Station]], [[Alaska]] from 1966 to 1969. Its operations were performed in concert with the RC-135S Rivet Ball aircraft (see below). The radar system alone weighed over 35,000 pounds and cost over US$35 million (1960 dollars), making Rivet Amber both the heaviest C-135 derivative aircraft flying and the most expensive Air Force aircraft for its time. This prevented the forward and aft crew areas from having direct contact after boarding the aircraft.<ref name=DrBob/>

The system could track an object the size of a soccer ball from a distance of {{convert|300|mi|km}}. Its mission was to monitor Soviet [[ballistic missile]] testing in the reentry phase. The power requirement for the phased array radar was enormous, necessitating an additional power supply. This took the form of a podded [[Honeywell T55|Lycoming T55-L5]] turboshaft engine in a pod under the left inboard wing section, driving a 350&nbsp;kVA generator, dedicated to powering mission equipment.<ref name=DrBob>{{cite book|title=The KC-135 Stratotanker; More Than Just a Tanker |last=Hopkins III |first=Robert S. |year=1997 |publisher=Midland Publishing Limited |isbn=978-1-85780-069-2}}</ref>

On the opposite wing, in the same location, was a podded heat exchanger to permit cooling of the massive electronic components on board the aircraft. This configuration has led to the mistaken impression that the aircraft had six engines. On 5 June 1969, Rivet Amber was lost at sea on a [[ferry flying|ferry flight]] from Shemya to Eielson AFB for maintenance. No trace of the aircraft or its crew was ever found.<ref name="aviation-safety.net">{{cite web|url=http://aviation-safety.net/database/record.php?id=19690605-0|title=ASN Aircraft accident Boeing RC-135E Rivet Amber 62-4137 Shemya, AK, USA [Bering Sea]|first=Harro|last=Ranter|website=aviation-safety.net|access-date=2 February 2019|archive-date=5 November 2013|archive-url=https://web.archive.org/web/20131105143859/http://aviation-safety.net/database/record.php?id=19690605-0|url-status=live}}</ref>