38:
336:
conference table, interphone, lighting and oxygen comprise the mission commanders' station for both countries' mission commanders. A four channel interphone system enables segregated communications between various elements on board. The auxiliary power unit enables the aircraft to start engines and provides electrical power and cabin heat independent of ground support equipment. It was manufactured by
104:
267:(DTRA). Cameras installed include one vertical and two oblique KS-87E framing cameras used for low-altitude photography approximately 3,000 feet (900 m) above the ground, and one KA-91C panoramic camera, which scans from side to side to provide a wide sweep for each picture used for high-altitude photography at approximately 35,000 feet (11,000 m).
372:
363:, for operations, training and maintenance. These aircraft are now located at the Davis-Mothan AFB bone yard and are being decommissioned. When tasked, ACC's role was to transport a DTRA observation team to an Open Skies point of entry airport, conduct the observation flight, and then return the team to the continental United States.
304:(GPS), provides continuous updates. The GPS updates the INS several times per second to correct any deviations in the flight path. The INS also feeds precise latitude, longitude, time, roll angle and barometric altitude to the DARMS and camera systems. A true airspeed computer feeds true airspeed data to the INS.
286:
Seven commercial
Norcold Tek II coolers with individual refrigeration units maintain temperature and humidity control to maintain peak film performance. The units can be removed, if necessary, from the aircraft in order to transport film. The coolers are capable of storing 40,000 feet (12,000 m)
270:
The data annotation and recording system (DARMS) processes navigational, altitude, time and camera signals to annotate each picture with correct position, altitude, time, roll angle and other information. In addition, this system records every picture taken according to camera, frame and navigational
335:
Other modifications support the aircrew. A gaseous oxygen system replaced the liquid oxygen system to be more compatible with foreign airfields, and fluorescent lighting system was added throughout the cabin to provide adequate lighting for operation and inspections. Four upgraded seats with a
307:
A combined altitude radar altimeter provides precise height above ground information to the pilot for navigational purposes as well as a signal to DARMS for film annotation. It is accurate from 0–50,000 feet (0–15,000 m) above the ground level. Plus, a metric altimeter is installed on the
282:
Camera control, located in the sensor operator's console, operates and adjusts individual cameras for cloud cover, frame overlap and other functions. The sensor operator console seats four and has all the equipment listed above plus camera bay heating control, chronometers, emergency oxygen,
331:
installed in the rear of the aircraft. Since its primary mission is to take pictures, most of the installed equipment and systems provide direct support to the cameras and the camera operator. Other modifications to the aircraft also included installing an auxiliary power unit, crew luggage
332:
compartment, sensor operator console, flight following console and upgraded avionics. Though the aircraft feature a large window in the cargo door, this is simply a remnant of their previous weather reconnaissance role.
262:
The interior seats 35 people, including the cockpit crew, aircraft maintenance crew, with bunks for the Crew Chiefs to sleep, foreign country representatives and crew members from the U.S. Department of
Defense's
253:
In May 2020, the Trump administration said it would exit the treaty and gave the required six-month notice. In
November, it announced plans to liquidate the two 60-year-old jets, offering them to other countries.
295:
The aircraft flies on its intended flight path throughout the entire mission with no reliance on ground-based navigation devices. A top-of-the-line commercial system, Litton 92 INS/GPS, which is an integrated
316:
823:
283:
interphone and individual lighting. The flight following console also seats four and includes most of the equipment listed above except for DARMS and camera controls.
206:, flies unarmed observation flights over participating parties of the treaty. Three OC-135B aircraft were modified by the Aeronautical Systems Center's
311:
The aircraft are being upgraded with the Block 30 Pacer Crag
Navigational System upgrade, a first step in making them compliant with ICAO mandated
577:
676:
242:
in 1997. Two fully operational OC-135B aircraft were delivered in 1996 with the full complement of treaty-allowed sensors, which includes an
227:
226:
in
October 1993. It is now fitted with a basic set of navigational and sensor equipment, and was placed in inviolate storage at the
799:
734:
597:
129:
718:
17:
833:
818:
81:
59:
52:
279:
color monitors display camera annotation and other camera data on screen for the sensor operator and observer use.
649:
402:
381:
Jane's all the World's
Aircraft 1994–95 (crew and operational equipment), AF Fact Sheet : OC-135B OPEN SKIES
308:
pilot's instrument panel for altitude reference when flying in countries that use meters for altitude reference.
264:
211:
560:
405:
mission flight crew: mission commander, deputy mission commander, two sensor operators and one flight follower
312:
623:
348:
231:
219:
838:
555:
477:
550:
340:
with the installation and design of the installation by E-Systems and World
Auxiliary Power Company.
301:
297:
247:
46:
203:
192:
147:
124:
63:
352:
199:
195:
8:
218:
but only two were ever used. The first operationally-capable OC-135B was assigned to the
803:
179:
742:
828:
714:
684:
765:
207:
356:
275:
is the input device for operation of this system. Two Barco 12-inch (30 cm)
235:
624:"US Officially Withdraws from Open Skies Agreement | Voice of America - English"
812:
792:
788:
688:
565:
395:
Seven (three pilots, two navigators, and two sensor maintenance technicians)
337:
223:
344:
272:
677:"Trump Exits Open Skies Treaty, Moves to Discard Observation Planes"
360:
343:
Until 2022 the aircraft were assigned to Air Combat
Command at the
243:
433:
239:
713:(84th ed.). Coulson, Surrey, UK: Jane's Information Group.
328:
103:
215:
480:
turbofan engines, 18,000 lbf (80 kN) thrust each
276:
371:
650:"The US is Out of the Open Skies Treaty. What's Next?"
824:
1990s United States military reconnaissance aircraft
287:
of film or lots of food and drinks when in country.
810:
535:Improved navigation and communications equipment
578:List of active United States military aircraft
709:Lambert, Mark; Munson, Kenneth, eds. (1994).
708:
501:2,998 nmi (3,450 mi, 5,552 km)
327:The OC-135B modifications center around four
228:Aerospace Maintenance and Regeneration Center
119:Observation Support/Support Open Skies Treaty
366:
257:
735:"AF Fact Sheet : OC-135B OPEN SKIES"
495:504 kn (580 mph, 933 km/h)
82:Learn how and when to remove this message
702:
675:Gordon, Michael R. (November 22, 2020).
529:1x Recon/Optical KA-91B panoramic camera
370:
45:This article includes a list of general
766:"The Incomplete Guide to Airfoil Usage"
711:Jane's all the World's Aircraft 1994–95
532:Loral AN/UPD-8 Synthetic aperture radar
14:
811:
674:
727:
417:130 ft 10 in (39.88 m)
763:
757:
429:2,433 sq ft (226.0 m)
411:136 ft 3 in (41.53 m)
130:Boeing Defense, Space & Security
31:
590:
423:41 ft 8 in (12.70 m)
24:
51:it lacks sufficient corresponding
25:
850:
470:322,500 lb (146,284 kg)
464:297,000 lb (134,717 kg)
27:US Air Force observation aircraft
604:. US Air Force. February 1, 2001
458:124,000 lb (56,000 kg)
451:98,466 lb (44,663 kg)
322:
102:
36:
513:4,900 ft/min (25 m/s)
317:Global Air Navigation Standards
265:Defense Threat Reduction Agency
212:Wright-Patterson Air Force Base
668:
642:
616:
561:Boeing WC-135 Constant Phoenix
507:50,000 ft (15,000 m)
290:
13:
1:
583:
313:Global Air Traffic Management
250:and video scanning sensors.
349:45th Reconnaissance Squadron
232:Davis-Monthan Air Force Base
220:24th Reconnaissance Squadron
7:
539:
401:31 mission crew, including
202:. The aircraft, a modified
10:
855:
556:Boeing KC-135 Stratotanker
478:Pratt and Whitney TF33-P-5
298:inertial navigation system
271:position. A keyboard with
551:Boeing C-135 Stratolifter
302:global positioning system
175:
167:
162:
154:
143:
135:
123:
115:
110:
101:
96:
834:Synthetic aperture radar
819:Boeing military aircraft
791:text from the following
526:3x Boeing KS-87B cameras
248:synthetic aperture radar
770:m-selig.ae.illinois.edu
386:General characteristics
367:Specifications (OC-135)
258:Description of aircraft
193:United States Air Force
148:United States Air Force
66:more precise citations.
787:This article includes
456:Empty equipped weight:
375:
374:
353:Offutt Air Force Base
598:"OC-135B Open Skies"
200:Treaty on Open Skies
196:observation aircraft
795:Government source:
681:Wall Street Journal
656:. November 23, 2020
630:. November 22, 2020
545:Related development
468:Max takeoff weight:
111:General information
804:Air Combat Command
800:OC-135B Fact Sheet
654:Air Force Magazine
376:
198:that supports the
189:OC-135B Open Skies
180:C-135 Stratolifter
18:OC-135B Open Skies
839:Low-wing aircraft
802:published by the
764:Lednicer, David.
745:on August 2, 2003
441:BAC 310/311/312;
185:
184:
168:Introduction date
97:OC-135 Open Skies
92:
91:
84:
16:(Redirected from
846:
781:
780:
778:
776:
761:
755:
754:
752:
750:
741:. Archived from
731:
725:
724:
706:
700:
699:
697:
695:
672:
666:
665:
663:
661:
646:
640:
639:
637:
635:
620:
614:
613:
611:
609:
594:
521:
505:Service ceiling:
488:
388:
208:4950th Test Wing
106:
94:
93:
87:
80:
76:
73:
67:
62:this article by
53:inline citations
40:
39:
32:
21:
854:
853:
849:
848:
847:
845:
844:
843:
809:
808:
785:
784:
774:
772:
762:
758:
748:
746:
733:
732:
728:
721:
707:
703:
693:
691:
673:
669:
659:
657:
648:
647:
643:
633:
631:
628:www.voanews.com
622:
621:
617:
607:
605:
596:
595:
591:
586:
542:
522:
517:
484:
452:
384:
369:
325:
293:
260:
88:
77:
71:
68:
58:Please help to
57:
41:
37:
28:
23:
22:
15:
12:
11:
5:
852:
842:
841:
836:
831:
826:
821:
807:
806:
783:
782:
756:
726:
720:978-0710611604
719:
701:
667:
641:
615:
588:
587:
585:
582:
581:
580:
569:
568:
563:
558:
553:
541:
538:
537:
536:
533:
530:
527:
515:
514:
511:Rate of climb:
508:
502:
496:
493:Maximum speed:
482:
481:
471:
465:
459:
453:
446:
430:
424:
418:
412:
406:
396:
368:
365:
324:
321:
292:
289:
259:
256:
246:line scanner,
183:
182:
177:
176:Developed from
173:
172:
169:
165:
164:
160:
159:
156:
152:
151:
145:
141:
140:
137:
133:
132:
127:
121:
120:
117:
113:
112:
108:
107:
99:
98:
90:
89:
44:
42:
35:
26:
9:
6:
4:
3:
2:
851:
840:
837:
835:
832:
830:
827:
825:
822:
820:
817:
816:
814:
805:
801:
798:
797:
796:
794:
793:United States
790:
789:public domain
771:
767:
760:
744:
740:
736:
730:
722:
716:
712:
705:
690:
686:
682:
678:
671:
655:
651:
645:
629:
625:
619:
603:
599:
593:
589:
579:
576:
575:
574:
573:
572:Related lists
567:
566:Boeing RC-135
564:
562:
559:
557:
554:
552:
549:
548:
547:
546:
534:
531:
528:
525:
524:
523:
520:
512:
509:
506:
503:
500:
497:
494:
491:
490:
489:
487:
479:
475:
472:
469:
466:
463:
462:Gross weight:
460:
457:
454:
450:
449:Empty weight:
447:
444:
440:
437:
435:
431:
428:
425:
422:
419:
416:
413:
410:
407:
404:
400:
397:
394:
391:
390:
389:
387:
382:
380:
373:
364:
362:
358:
354:
350:
346:
341:
339:
338:Allied Signal
333:
330:
323:Modifications
320:
318:
314:
309:
305:
303:
300:(INS) with a
299:
288:
284:
280:
278:
274:
268:
266:
255:
251:
249:
245:
241:
237:
233:
229:
225:
221:
217:
213:
209:
205:
201:
197:
194:
190:
181:
178:
174:
170:
166:
161:
157:
153:
149:
146:
142:
138:
134:
131:
128:
126:
122:
118:
114:
109:
105:
100:
95:
86:
83:
75:
65:
61:
55:
54:
48:
43:
34:
33:
30:
19:
786:
773:. Retrieved
769:
759:
747:. Retrieved
743:the original
738:
729:
710:
704:
694:November 24,
692:. Retrieved
680:
670:
660:November 24,
658:. Retrieved
653:
644:
634:November 24,
632:. Retrieved
627:
618:
608:November 15,
606:. Retrieved
601:
592:
571:
570:
544:
543:
518:
516:
510:
504:
498:
492:
485:
483:
473:
467:
461:
455:
448:
442:
438:
432:
426:
420:
414:
408:
398:
392:
385:
383:
378:
377:
342:
334:
326:
319:guidelines.
310:
306:
294:
285:
281:
269:
261:
252:
188:
186:
155:Number built
144:Primary user
125:Manufacturer
78:
69:
50:
29:
486:Performance
474:Powerplant:
291:Flight path
64:introducing
813:Categories
602:www.af.mil
584:References
427:Wing area:
224:Offutt AFB
150:(intended)
139:In service
72:March 2013
47:references
775:April 16,
689:0099-9660
415:Wingspan:
399:Capacity:
379:Data from
345:55th Wing
273:trackball
171:June 1993
829:Quadjets
540:See also
519:Avionics
361:Nebraska
244:infrared
445:BAC 313
434:Airfoil
421:Height:
409:Length:
329:cameras
240:Arizona
204:WC-135B
163:History
60:improve
749:May 4,
739:af.mil
717:
687:
499:Range:
236:Tucson
136:Status
49:, but
439:root:
393:Crew:
357:Omaha
355:near
234:near
191:is a
777:2019
751:2019
715:ISBN
696:2020
685:ISSN
662:2020
636:2020
610:2014
476:4 ×
443:tip:
403:DTRA
315:and
216:Ohio
187:The
116:Type
277:VGA
230:at
222:at
214:in
210:at
815::
768:.
737:.
683:.
679:.
652:.
626:.
600:.
359:,
351:,
347:,
238:,
779:.
753:.
723:.
698:.
664:.
638:.
612:.
436::
158:3
85:)
79:(
74:)
70:(
56:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
