LOCKHEED P-3 ORION
ORION SERVICE
| Manufacturer: | The Lockheed Aircraft Corp., Burbank, California,
USA (In 1977, became Lockheed Corp.) (In 1995, became Lockheed-Martin Corp., Bethesda, Maryland, USA) |
| Models: | Model 185, 285, 685, 785 |
| Designations: | P-3; P3V, CP-140 (CAF) |
| Names: | Orion; Aries (EP-3E), Sentinel (P-3 AEW&C), Aurora & Arcturus (CP-140, Canada) |
| First official flight: | Prototype form 19/08/1958 then as (YP3V-1) 25/11/1959 (P3V-1) 15/04/1961 |
| Factory Production period: | 1960 - 1995 (2000 in Japan) |
| Primary service period: | 1962 - present |
| Last official flight: | Still in service |
ORION VARIANTS
Based on the Lockheed L-188 Electra civil
airliner,
170 built from 1957 - 1962, ff: 06/12/1957.
| 1961 | Model 185 | P3V-1 (P-3A) | 157 | |
| 1965 | Model 185/B/C | P-3B | 144 | Total: 301 |
| 1968 | Model 285A | YP-3C | 1 | |
| 1968 | Model 285A/D/E/785A | P-3C | 317 | |
| 1971 | Model 285A | RP-3D | 1 | |
| 1975 | Model 285A | WP-3D | 2 | Total: 321 |
| 1975 | Model 685A | P-3F | 6 | |
| 1979 | Model 285D | CP-140 | 18 | |
| 1990 | Model 285D | CP-140A | 3 | Total: 027 |
|
Grand Total: 649 |
| 1982 |
Foreign built - Japan: Model 785A |
P-3C |
107 |
Grand Total: 107 |

RNZAF P-3B-70-LO, s/n: NZ4201 (USN BuNo.
152886), was upgraded
along with five other RNZAF Orions to P-3K standards, first flying in 1983.
Christchurch, New Zealand, 2003.
ORION PRODUCTION
| YP3V-1 | 1958, third civil L-188 (N1883, c/n: 188-1003) converted as a
prototype. Redesignated as YP3V-1 in 1959, BuNo. 148276, (new c/n: 185-1003), then redesignated as YP-3A in 1962. |
P3V-1
4 engined maritime reconn. / ASW aircraft.
Redesignated as P-3A in 1962. Later with
upgrades through modernization programs.
Produced 1960 - 1965
Lockheed Burbank, California (V)
| BuNo.148883 / 148889 | 185-5001 / 5007 | ||
| BuNo.149667 / 149678 | 185-5008 / 5019 | ||
| BuNo.150494 / 150529 | 185-5020 / 5055 | ||
| BuNo.150604 / 150609 | 185-5056 / 5061 | ||
| BuNo.151349 / 151396 | 185-5062 / 5109 | ||
| BuNo.152140 / 152187 | 185-5110 / 5157 |
157 |
Total: 157 |
P-3B
As P-3A, engine / armament upgrade.
Later upgrades through modernization
programs.
Produced 1965 - 1969
Lockheed Burbank, California (LO)
P-3B LW
1965, lightweight version.
| BuNo.152718 / 152765 | mixed 185-5158 to 5210 | ||
|
BuNo.152886 / 152890 - 5 to New Zealand as NZ4201 / NZ4205. |
mixed 185-5190 to 5208 | ||
| BuNo.153414 / 153442 | 185-5211 / 5239 | 82 |
P-3B HW
1967, heavyweight version.
| BuNo.153444 / 153458 | 185-5240 / 5254 | ||
|
BuNo.154574 / 154605 - BuNo. 154605 to Australia as A9-605. |
185-5255 / 5285 | ||
|
BuNo.155291 / 155300 - 10 to Australia as A9-291 / A9-300. |
185B-5401 / 5410 | ||
|
BuNo.156599 / 156603 - 5 to Norway as KK-L / KK-P. |
185C-5301 / 5305 | 62 | Total: 144 |
| 8 additional airframes cancelled. | |||

Starboard wing as seen from
the observers position behind the
flight-deck on RNZAF P-3K Orion, s/n: NZ4202.
Christchurch, New Zealand, 2002.
YP-3C
As P-3B, factory converted P-3C prototype,
major electronics / systems upgrade.
Later redesignated as RP-3D, then NP-3D.
Produced 1968
Lockheed Burbank, California (LO)
| BuNo.153443 | 285A-5500 |
1 |
Total: 001 |
P-3C
As YP-3C, electronics upgrades continued
through "Update" and modernization programs.
Production shifted to Palmdale, CA. from 1984
(c/n: 5780) and Marietta, GA. from 1991 (c/n: 5831).
Produced 1968 - 1995
Lockheed Burbank, California (LO)
| BuNo.156507 / 156530 | 285A-5501 / 5524 | ||
| BuNo.157310 / 157332 | 285A-5525 / 5547 | ||
| BuNo.158204 / 158226 | mixed 285A-5548 to 5571 | ||
| BuNo.158563 / 158574 | 285A-5572 / 5583 | ||
| BuNo.158912 / 158935 | 285A-5584 / 5607 | ||
| BuNo.159318 / 159329 | 285A-5608 / 5619 |
118 |
P-3C-I
1974, as P-3C, improved avionics.
| BuNo.159503 / 159514 | mixed 285A-5620 to 5632 | ||
| BuNo.159883 / 159894 | 285A-5634 / 5645 | ||
| BuNo.160283 / 160289 | 285A-5646 / 5652 |
31 |
P-3C-II
1977, as P-3C-I, further improvements.
| BuNo.160290 / 160293 | 285A-5653 / 5656 | ||
| BuNo.160610 / 160612 | mixed 285A-5659 to 5663 | ||
|
BuNo.160751 / 160760 - 10 to Australia as A9-751 / A9-760. |
mixed 285D-5657 to 5676 | ||
| BuNo.160761 / 160770 | mixed 285A-5665 to 5679 | ||
| BuNo.160999 / 161014 | mixed 285A-5680 to 5699 | ||
| BuNo.161121 / 161131 | mixed 285A-5700 to 5721 |
54 |
P-3C-II.5
1981, as P-3C-II, new nav. / comms. systems.
| BuNo.161132 | 285A-5724 | ||
|
BuNo.161267 / 161269 - 3 to Japan as 5001 / 5003. |
785A-7001 / 7003 | ||
| BuNo.161329 / 161340 | mixed 285A-5726 to 5739 | ||
|
BuNo.161368 / 161380 - 13 to The Netherlands as 300 / 312. |
mixed 285E-5733 to 5776 | ||
| BuNo.161404 / 161415 | mixed 285A-5740 to 5755 | ||
| BuNo.161585 / 161596 | mixed 285A-5756 to 5771 | ||
|
BuNo.162656 / 162665 - 10 to Australia as A9-656 / A9-665. |
mixed 285D-5778 to 5795 |
63 |
P-3C-III
1983, as P-3C-II.5, further improvements.
| BuNo.161762 / 161767 | mixed 285A-5772 to 5783 | ||
| BuNo.162314 / 162318 | mixed 285A-5786 to 5794 | ||
| BuNo.162770 / 162778 | 285A-5796 / 5804 | ||
| BuNo.162998 / 163006 | 285A-5805 / 5813 | ||
|
BuNo.163289 / 163299 - 4 to Norway as 3296 / 3299. |
mixed 285A-5814 to 5824 |
40 |
P-3C-II.75
1990, as P-3C-II.5 / -III, for Pakistan,
not delivered until 1997.
|
BuNo.164467 / 164469 - 3 to Pakistan as 81 / 83. |
285A5825 / 5827 |
3 |
Lockheed-Martin Marietta, Georgia (LM)
P-3C-III+
1994, as P-3C-III, for South Korea.
|
BuNo.165098 / 165105 - 8 to South Korea as 95-0901 / 95-0908. |
285A-5831 / 5838 |
8 |
Total: 317 |
| 70 additional airframes cancelled. | |||
P-3D - Proposed development of the P-3C, cancelled.
RP-3D
As P-3C, factory converted for atmospheric
research duties. 4 P-3B's also converted.
Later redesignated as NP-3D.
Produced 1971
Lockheed Burbank, California (LO)
| BuNo.158227 | 285A-5551 |
1 |
Total: 001 |
WP-3D
As P-3C, factory converted for civil
atmospheric research with NOAA.
Produced 1975
Lockheed Burbank, California (LO)
|
BuNo.159773 Delivered as: N42RF (civil reg.) |
285A-5622 |
1 |
|
|
BuNo.159875 Delivered as: N43RF (civil reg.) |
284A-5633 |
1 |
Total: 002 |
P-3F
As P-3C, version for Iran, equipment
changes, inflight refuelling.
Produced 1975
Lockheed Burbank, California (LO)
|
BuNo.159342 / 159347 Delivered as: (IIAF) 5-251 / 5-256 (renumbered: 5-8701 / 5-8706) |
685A-6001 / 6006 |
6 |
Total: 006 |
P-3G
- Proposed long range ASW aircraft, cancelled.
P-3H
- Proposed P-3C upgrade, cancelled.
P-3I
- Not used.

Port wing showing engine nacelle and exhaust
design
details on RNZAF P-3K Orion, s/n: NZ4202.
Christchurch, New Zealand, 2002.
CP-140 Aurora
As P-3C, equipment changes for Canada.
Produced 1978 - 1981
Lockheed Burbank, California (LO)
| (CAF) 140101 / 140118 | mixed 285D-5682 to 5725 |
18 |
Total: 018 |
CP-140A Arcturus
As CP-140, stripped down version.
Produced 1989 - 1991
Lockheed Palmdale, California
| (CAF) 140119 / 140121 | 285D-5828 / 5830 |
3 |
Total: 003 |
|
Grand Total: 649 |
Foreign built - Japan:
P-3C
Japanese built version of the P-3C, first 5 (5004 / 5008),
assembled from US built components.
Several variants were also produced.
Produced 1982 - 2000
Kawasaki Heavy Industries Ltd., Gifu, Japan
|
P-3C-II.5 / -III / -III+ (JMSDF) 5004 / 5101 |
785A-9001 / 9098 | 98 | |
| EP-3 (JMSDF) 9171 / 9175 |
785A-1001 / 1005 | 5 | |
| UP-3C (JMSDF) 9151 |
785A-2001 | 1 | |
| UP-3D (JMSDF) 9161 / 9163 |
785A-3001 / 3003 | 3 | Grand Total: 107 |
ORION CONVERSIONS
Military Conversions
US Navy
| P-3ACH | 4 | P-3A, modernization program for Chilean Navy. |
| P-3AM | 8 | P-3A, 2008, modernization program for Brazil. |
| CP-3A | - | P-3A, proposed cargo / passenger conversion, cancelled. |
| EP-3A | 7 | P-3A, 1967, ELINT conversions, radomes added under fuselage. |
| RP-3A | 3 | P-3A, 1973, conversions for oceanographic survey duties. |
| TP-3A | 12 | P-3A, 1985, conversions as crew trainers. |
| UP-3A | 38 | P-3A, 1985, conversions as utility transports. |
| VP-3A | 5 | 2 P-3A / 3 WP-3A, 1976, conversions to VIP / passenger transports. |
| WP-3A | 4 | P-3A, 1971-1975, weather reconn. conversions, 1 to NP-3A, 3 to VP-3A. |
| EP-3B | 3 |
2 P-3A, 1969, named "Bat Rack", modified for electronic surveillance, later converted to EP-3E. 1 P-3B also converted as EW test aircraft. |
| NP-3B | 1 | P-3B, 1969-2001, permanent testbed conversion. |
| TAP-3B | 3 | P-3B, 1997, ex. USN conversions
as RAAF trainers / transports, "T" for Trainer, "A" for Australia. |
| UP-3B | 5 | P-3B, conversions as utility transports. |
| P-3C AIP | 71 | P-3C, 1998, Aircraft Improvement Program (AIP) electronics upgrades. |
| NP-3C | 1 | P-3C, permanent testbed conversion. |
| TP-3C | - | P-3C, proposed conversions as crew trainers, cancelled. |
| NP-3D | 14 | 7 P-3A / 5 P-3B, 1994-present,
redesignation as permanent
conversions for various research and test duties. Additionally, 1 is former YP-3C and 1 other is former RP-3D. |
| EP-3E |
12 |
Aries 10 P-3A / 2 EP-3B, 1971, ELINT electronic surveillance conversions. |
| EP-3E | 12 |
Aries II P-3C, 1988, improved ELINT electronic surveillance conversions. BuNo. 156511, involved in China Incident, 01/04/2001. |
| NP-3E | 1+ | P-3C, permanent testbed conversions. |
| EP-3J | 2 | P-3B, 1992, electronic threat simulators for US fleet exercises. |
| P-3K | 6 | P-3B, 1983, RNZAF Rigel electronics upgrade programme, K for "Kiwi". |
| P-3M | 1+ | P-3A / P-3B, 2003-present, modernization program for Spain. |
| P-3N | 2 | P-3B, 1991, surveillance / training conversions for Norwegian Coast Guard. |
| P-3P | 6 | P-3B, 1985, ex-RAAF aircraft for Portugal, modified to Update II standard. |
| P-3T | 3 | P-3A, 1990, modified aircraft
for Thailand, 1 modified as UP-3T for utility duties, then as VP-3T for VIP duties. |
| P-3W | 20 |
P-3C, 1978, RAAF aircraft with modified equipment. Further upgraded in 1997 to AP-3C standards. |
Foreign Conversions
| NP-3C | 1+ | P-3C, KHI conversions for airways checks in Japan. |
| OP-3C | 4 | P-3C, 2001-present, KHI
electronic surveillance conversions. New JMSDF s/n: 9131 / 9134. |
Civil Conversions
| P-3A(CS) | 4 | P-3A, temporary conversions with enhanced radar for US Customs. |
| NP-3A | 2 |
YP3V-1, 1966, to NASA (N428NA civil reg.), for Earth Resources
Program. 1 P-3B also converted in 1990 as N426NA (civil reg.). |
| P-3 AEW&C | 9 | Sentinel P-3B, 1984, Airborne Early Warning & Control, large dorsal rotodome. Currently used by the US Customs Service. |
FOREIGN MILITARY / CIVILIAN SERVICE
- Second-hand Orions sold to Argentina, Brazil, Chile, Greece,
Portugal,
Spain and Thailand.
- Many Orions sold to US or foreign civilian / government agencies
for various customs, test duties etc.
- P-3 Aerostar, 1989, 8 conversions by Aero Union Corp., California
as
civil fire-bombers.