A TSO (Technical Standard Order) is a minimum performance standard for specified materials, parts, and appliances used on civil aircraft. When a manufacturer is authorized to produce a material, part, or appliance to a TSO standard, it is referred to as TSO authorization. For TSO parts like TSO-C37C, TSO-C4C, TSO-C5D, TSO-C5C, TSO-C38D, Purchasing Union is here to help. Owned and operated by ASAP Semiconductor, we have access to an inventory of more than two billion new and obsolete parts for the aerospace, civil aviation, and defense industries, all available with short lead times and competitive prices. For parts not in our inventory, our team of dedicated account managers can efficiently track them down though our extensive international supply chain network that spans United States. To begin the purchasing process immediately, submit an RFQ below. Sales representatives are standing by and will respond to your inquiries in 15 minutes or less, 24/7/365.
| TSO Number | TSO Holder Name | TSO Title | Part Model Number/Name | RFQ |
|---|---|---|---|---|
| tso-c37c | narco avionics corp. | mk-12d 03118-317/-318/-319/-320, | RFQ | |
| tso-c4c | northrop grumman, litton | ltn-96-100 msu | 452100-02-02, | RFQ |
| tso-c5d | northrop grumman, litton | ltr-81-01 compass controller u | 461995-02, 461995-03, | RFQ |
| tso-c5c | northrop grumman, litton | ltn-90 inertial reference unit | 461600-06-03, 461600-07-06, 461600-07-07, 461600-07-08, 461600-0700-0801, 461600-08-08, 461600-0800-0801, | RFQ |
| tso-c38d | nec | 1(x)-1(x)90, | RFQ | |
| tso-c50c | northern airborne technol | switch panel | model 802-(xxx), | RFQ |
| tso-c6d | northrop grumman, litton | ltn-90 inertial sensor display | 461640-08-03, 461640-07-03, 461640-04-01, | RFQ |
| tso-c22 | northwest airlines, inc. | part number not furnished, | RFQ | |
| tso-c4c | northrop grumman, litton | ltr-81-01 attitude heading and | 460800-01-01, | RFQ |
| tso-c4c | northrop grumman, litton | ltn-90-100 iru | 461800-04-08-116, 461800-04-122, 461800-0408-1606, 461800-0300-2202, 461800-01-101, 461800-02-04-105, 461800-02-04-125, 461800-02-08-116, 461800-02-102, 461800-02-111, 461800-02-122, 461800-0200-2201, 461800-0200-2202, 461800-0208-1606, 461800-03-122, 461800-02-04-120, 461800-0300-2201, | RFQ |
| tso-c34c | narco avionics corp. | nav-114, nav-112, 825, id 124( ), id825, nav 124, mk-12d 03118-317/-318/-319/-320, nav 122( ), nav 200, ne800, voa822, | RFQ | |
| tso-c6d | northrop grumman, litton | ltn-101 global navigation air | 465020-0301-0302, 465020-0302-0303, 465020-0303-0500, 465020-0302-0305, 465020-0303-0307, 465020-0303-0308, 465020-0303-0309, 465020-0303-0310, 465020-0303-0312, 465020-0303-0501, 465020-03030313, 465020-03030314, 465020-0302-0304, 465020-0303-0311, | RFQ |
| tso-c90c | nordisk aviation products | 510333-1( ), 510333-2( ), | RFQ | |
| tso-c5c | northrop grumman, litton | ltn-96-100 inu | 461800-02-02-107, 461800-02-02-104, | RFQ |
| tso-c5d | northrop grumman, litton | ltn-90 inertial sensor display | 461640-04-01, 461640-08-03, 461640-07-03, | RFQ |
| tso-c50c | nat seattle, inc. | area microphone preamplifier | 265-[ ], | RFQ |
| tso-c42 | northwest airlines, inc. | part numbers not furnished, | RFQ | |
| tso-c4c | northrop grumman, litton | ltn-58 / ltn-72 align display | 456660-02, 456660-02-01, 456660-02-02, | RFQ |
| tso-c5d | northrop grumman, litton | ltr-81-01 remote magnetic comp | 461985-03, | RFQ |
| tso-c90 | nippon sharyo seizo kaish | m2 p/n r20891-111, | RFQ | |
| tso-c5e | northrop grumman, litton | ltn-76 inu | 454797-03, | RFQ |
| tso-c5c | northrop grumman, litton | ltn-90-100 triple msu | 465330-01, | RFQ |
| tso-c5c | northrop grumman, litton | ltr-81-01 attitude heading and | 460800-01-01, | RFQ |
| tso-c94 | norden systems | 701f p/n 160272-( ), ons vii 703 - p/n 160244, ons vii 701g - p/n 160293, 701v p/n 165375-007, 701a p/n 165364-002, | RFQ | |
| tso-c51a | normalair - garrett ltd. | 1123v000, | RFQ | |
| tso-c139 | nat seattle, inc. | switch panel | 809, p/n 808-002 mod a, 809, p/n 808-003 mod a, 808, p/n 808-003 mod a, 809, p/n 808-000 mod a, 808, p/n 808-002 mod a, 808, p/n 808-001 mod a, 808, p/n 808-000 mod a, 809, p/n 808-001 mod a, | RFQ |
| tso-c6c | northrop grumman, litton | ltn-91/90-100 isdu | 463600-01-01, | RFQ |
| tso-c139 | northern airborne technol | passenger intercom amplifier | pia01-001, | RFQ |
| tso-c5d | northrop grumman, litton | ltn-90 inertial reference unit | 461600-06-03, 461600-07-06, 461600-07-07, 461600-07-08, 461600-0700-0801, 461600-08-08, 461600-0800-0801, | RFQ |
| tso-c40c | northrop grumman componen | hsi-315-( ), hsi-415-( ), dcu-201a-2c ( ), 520-4230-( )( ) ( ), 520-415-( )( )( ), 520-3150-( ), 520-2010-005, | RFQ | |
| tso-c113 | nat seattle, inc. | cms-1000, | RFQ | |
| tso-c6c | northrop grumman, litton | ltn-92 msu | 452100-02-03, | RFQ |
| tso-c115a | narco avionics corp. | narco star *nav ns9000, 03126-0302 adf 140, | RFQ | |
| tso-c6d | northrop grumman, litton | ltn-51 mode select unit (msu) | 663570-03, | RFQ |
| tso-c4c | northrop grumman, litton | ltn-96 iru | 461800-02-106, | RFQ |
| tso-c6d | northrop grumman, litton | ltn-72rl inu | 460500-02-xx, 460500-01-xx-xxx, 460500-03-xx, 460500-01-xx, | RFQ |
| tso-c6c | northrop grumman, litton | ltr81-01/ 81-02 ahru | 460800-04-05-33-31, 460800-02-03, 460800-01-02, 460800-03-04, 460800-04-05-13-11, 460800-03-06, 460800-03-07, 460800-04-05-12-10, 460800-04-05-32-30, 460800-04-05-23-21, | RFQ |
| tso-c4c | northrop grumman, litton | ltn-76 inu | 454797-03, | RFQ |
| tso-c22 | n. central airlines, inc. | model a, | RFQ | |
| tso-c23b | no. american aerodynamics | naa-2, naa-1, naa-p-1, naa 26', naap-2 20001 (less canopy), naa-oa 60001, | RFQ | |
| tso-c36 | narco avionics corp. | nav 112, nav 111, nav 110, dgo 10 gyro, voa-3a, vsc-2, vsrp-1, nav 114, dgo 10 conv, | RFQ | |
| tso-c88a | northrop grumman, litton | ltn-101 global navigation air | 465020-0303-0310, 465020-0303-0311, 465020-0302-0305, 465020-0303-0312, 465020-0303-0309, 465020-0303-0500, 465020-0303-0308, 465020-0303-0307, 465020-0302-0304, 465020-0302-0303, 465020-0301-0302, 465020-03030313, 465020-0303-0501, 465020-03030314, | RFQ |
| tso-c5d | northrop grumman, litton | ltn-72rl & 92 cdu | 458900-09-02, 458900-01, 458900-02, 458900-03, 458900-03-03, 458900-04, 458900-06-01, 458900-07, 458900-08-01, 458900-09-01, 458900-08-02, | RFQ |
| tso-c4c | northrop grumman, litton | ltn-91/90-100 isdu | 463600-01-01, | RFQ |
| tso-c5c | northrop grumman, litton | ltn-72rl inu | 460500-01-xx, 460500-01-xx-xxx, 460500-02-xx, 460500-03-xx, | RFQ |
| tso-c50c | northern airborne technol | ecr 2151, ecr 945 mod 1, ecr 2221 mod 5, ecr 2145 mod 4, ecr 1917, ecr 1791, ecr 1718, ecr 1685 mod 3, ecr 1609 mod 2, aa95, | RFQ | |
| tso-c66 | narco avionics aerospace | udi-2ar, udi-2a, nav-114, nav-112, nav-111, | RFQ | |
| tso-c4c | northrop grumman, litton | ltn-72r cdu | 454640-01-05, 454640-01-06, 454640-01-08, 454640-01-02, 454640-01-09, 454640-01-04, 454640-01-03, 454640-01, 454640-01-01, 454640-01-07, | RFQ |
| tso-c5e | northrop grumman, litton | ltn-101 global navigation iner | 465020-0400-0400, 465020-0400-0401, 465020-0400-0600, 465020-0400-0601, 465020-0400-0602, 465020-0400-0603, | RFQ |
| tso-c6c | northrop grumman, litton | ltn-72 inu | 452080-05-xx, 452080-04, 452080-05, 452080-04-xx, | RFQ |
| tso-c6d | northrop grumman, litton | ltn-72rl & 92 cdu | 458900-08-01, 458900-09-01, 458900-09-02, 458900-08-02, 458900-07, 458900-04, 458900-03-03, 458900-06-01, 458900-03, 458900-02, 458900-01, | RFQ |
| tso-c6c | northrop grumman, litton | ltn-76 inu | 454797-03, | RFQ |
| tso-c145c | navworx incorporated | uat ads-b | model ads600-b, p/n 200-0112-[]-[], | RFQ |
| tso-c5e | northrop grumman, litton | ltn-101 dual msu | 465630-02, | RFQ |
| tso-c139 | nat seattle, inc. | dcoms | models 5520 pn 5520-003 mod 12, models 5520 pn 5520-002 mod 12, models 4420 pn 4420-0000 mod 12, models 5520 pn 5520-004 mod 12, models 5520 pn 5520-001 mod 12, | RFQ |
| tso-c5e | northrop grumman systems | litton aero products ltn-101 a | 465000-03, | RFQ |
| tso-c34d | narco avionics corp. | ne 800, ns 801, | RFQ | |
| tso-c62 | nippon goodyear | 29x7.7/12/200, tire size/ply rating/speed, 49x17/30/225, 49x17/28/200, 39x13/22/200, 32x11.50/12/200, 12.50-16/12/120, 12.50-16/14/160, 24x7.7/10/120, 34x11/20/200, 34x11/22/225, 39x13/16/200, 49x17/26/200, 40x14/22/200, 40x14/24/200, 44x16/28/200, 44x16/30/225, 46x16/28/200, 225, 46x16/30/225, 39x1 | RFQ | |
| tso-c50c | northern airborne technol | stereo audio panel | ams50-(xxx) ecr 2350, ams50-(xxx), ams50-(xxx) -120, ams50-(xxx) -021, ams50-(xxx) -020, ams50-(xxx) -121, | RFQ |
| tso-c4c | northrop grumman, litton | ltn-58 msu | 451190-02, 451190-03, | RFQ |
| tso-c34e | narco avionics corp. | indicator | ni209 vor/loc/gs, | RFQ |
| tso-c5c | northrop grumman systems | litton inertial navigation sys | 454019-01, | RFQ |
| tso-c34b | narco avionics corp. | voa-9, ugr-2, | RFQ | |
| tso-c5c | narco avionics corp. | hsi 100( ), | RFQ | |
| tso-c5e | northrop grumman, litton | ltn-90-100 irmp | 461320-01-02, | RFQ |
| tso-c5c | northrop grumman, litton | ltn-72rl & 92 cdu | 458900-01, 458900-02, 458900-09-01, 458900-03, 458900-03-03, 458900-04, 458900-06-01, 458900-07, 458900-08-02, 458900-09-02, 458900-08-01, | RFQ |
| tso-c90c | nordisk aviation products | 127860-1( ), 510150-2( ), 510150-4( ), | RFQ | |
| tso-c164 | nivisys industries llc | night vision goggle | nvag-31601, | RFQ |
| tso-c5e | northrop grumman, litton | ltr-97litton heading and attit | 465821-03-02, 465821-03-01, 465821-02-02, 465821-02-01, | RFQ |
| tso-c6c | northrop grumman, litton | ltn-72rl & 92 cdu | 458900-04, 458900-09-02, 458900-09-01, 458900-08-02, 458900-08-01, 458900-06-01, 458900-03-03, 458900-03, 458900-02, 458900-01, 458900-07, | RFQ |
| tso-c6c | northrop grumman, litton | ltn-90-100 triple msu | 465330-01, | RFQ |
| tso-c5e | northrop grumman, litton | ltr-81-01 attitude heading and | 460800-01-01, | RFQ |
| tso-c4c | northrop grumman, litton | ltn-90-100 irmp | 461320-01-02, | RFQ |
| tso-c50c | northern airborne technol | audio selector panel | model 355 (xxx), model 355-005, model 355-004, model 355-003, model 355-002, model 355-001, model 355, model 300-(xxx), model 355-008, model 355-006, model 806-(xxx), model 807-(xxx), model 355-007, | RFQ |
| tso-c6c | northrop grumman, litton | ltn-96-100 msu | 452100-02-02, | RFQ |
| tso-c6c | northrop grumman, litton | ltr-81-01 remote magnetic comp | 461985-03, | RFQ |
| tso-c5c | northrop grumman, litton | ltn-51 inertial navigation uni | 663450-11, 663450-14, 663450-12-xx, 663450-10, 663450-12, 663450-09, 663450-08-xx, 663450-08, 663450-07, | RFQ |
| tso-c50c | northern airborne technol | audio mixing amplifier | model 247-(xxx), | RFQ |
| tso-c66b | northrop grumman componen | 520-3031-( ), 520-4230-( )( ) ( ), 520-3030-( ), | RFQ | |
| tso-c139 | noise reduction technolog | acoustic noise cancelling head | model 327070-( ), | RFQ |
| tso-c40b | narco avionics corp. | ne 800, mk-12d id824/825, voa 822, mk12d 03118/-317/-318/-319/-320, ns 801, voa 821, | RFQ | |
| tso-c5e | northrop grumman, litton | ltn-90 inertial sensor display | 461640-04-01, 461640-07-03, 461640-08-03, | RFQ |
| tso-c50c | northern airborne technol | intervox ii intercom system | model aa85-(xxx), | RFQ |
| tso-c38c | narco avionics corp. | mk-12d 03118-317/-318/-319/-320, | RFQ | |
| tso-c5c | northrop grumman, litton | ltn-92 inu | 463001-7221-0901, 463001-8130-0413, 463001-8000-0413, 463001-8000-0412, 463001-7275-0902, 463001-7241-0504, 463001-7235-0902, 463001-7000-0506, 463001-7233-0506, 463001-81800506, 463001-7221-0503, 463001-7140-0504, 463001-7130-0506, 463001-7120-0901, 463001-7120-0503, 463001-7234-1600, 463001-xx8x-0 | RFQ |
| tso-c4c | northrop grumman systems | litton aero products ltr-97 li | 465821-02-01- lhas, 465821-02-02 lhas, | RFQ |
| tso-c62e | national civil aviation a | aircraft tire | 505c01-2, 156e06b1, | RFQ |
| tso-c6c | northrop grumman, litton | ltn-96 iru | 461800-02-106, | RFQ |
| tso-c123a | northern airborne technol | rvr-223 cvr control | 903-5223-( ), | RFQ |
| tso-c23c | northern lite enterprises | infinity harness, sst-090, | RFQ |
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