Ordtech Military Industries 
DEFA 552, 552A, 553 Upgrade
OMI Upgrade for 30mm DEFA 552, 552A, 553 airborne cannons.
The conversion offers a rate of fire of 1800 rounds/min and multi-shot in-flight re-cocking capability in par with the 554 weapon in DEFA family (30-550 F4), in Mirage 2000 aircraft.
This gives an increased hit-probability and enables the aircraft to remain effective even in case of ammunition problems. Take-off safety is also enhanced, as aircraft can take-off with cannons uncocked, without having to sacrifice the ability to re-cock should ammunition problems occur.
DEFA 552/553 Spare Parts
OMI manufactures parts and provides overhaul services for the DEFA 552 / 553 cannon.
Description |
Part Number |
DEFA model |
Equivalent NSN |
| ELECTRICAL EQUIP BARETTE | 3CGF52A6S17F | DEFA 552/553 | 1270-14-366-5443 |
| ANTI-DOUBLE ALIMENTATION | 3CGF532-32B | DEFA 552/553 | 1005-14-409-0120 |
| REDUCER PRESSURE, G DECOMPRESSEUR, CANON |
3CGF541S2A | DEFA 552/553 | 1005-14-409-0135 |
| FLOOR PLANCHER ALIMENTATION | 3CGF545S4A | DEFA 552/553 | 1005-14-376-8337 |
| DAMPER RECOIL | 3CGF547S1A | DEFA 552/553 | 1005-14-376-8382 |
| FIRING UNIT COMPLETE CABLE ELECTRIQUE EQUIPEE |
3CGF52A6S17F | DEFA 552/553 | 1270-14-366-5443 |
| GUIDE | 3CGF522-11 | DEFA 552/553 | 1005-14-200-0018 |
| POUSSOIR | 3CGF522-52 | DEFA 552/553 | 1005-14-200-0029 |
| LEVIER | 3CGF522-6B | DEFA 552/553 | 1005-14-320-0099 |
| BLOC | 3CGF0693C | DEFA 552/553 | 1005-14-200-0047 |
| BARREL GUN 30-550F3 | 3CGF531F | DEFA 552/553 | 1005-14-424-3602 |
| GAS INTAKE ASSEMBLY PRIZE DE GAS |
3CGF532S13B | DEFA 552/553 | 1005-14-414-3110 |
| REARMEMENT PYROTECH | 3CGF5227A | DEFA 552/553 | 1005-14-320-0250 |
| CANON, ARME A FEU BARREL |
3CGF52A1 | DEFA 552/553 | 1005-14-297-3307 |
| CHAMBRE AVEC VERROU CHAMBER ASSY |
3CGF5227S1A | DEFA 552/553 | 1005-14-320-0097 |
| TAMBOUR COMPLET DRUM ASSY |
3CGF532S7 | DEFA 552/553 | 1005-14-320-2667 |
| CANON, MILTRAILLEUSE GUN BARREL |
3CGF531E | DEFA 552/553 | 1005-14-424-3602 |
| RETAINER ASSY CARTRIDGE | 3CGF532S12B | DEFA 552/553 | 1005-14-374-2073 |
| PIN, SPROCKET AXE DES ETOILES |
3CGF535-12A | DEFA 552/553 | 1005-14-345-4216 |
| FIRING UNIT COMPLETE CABLE ELECTRIQUE EQUIPEE |
3CGF52A6S17F | DEFA 552/553 | 1270-14-366-5443 |
| GAS VENT CANON ARME A FEU |
3CGF52A1 | DEFA 552/553 | 1005-14-297-3307 |
| TAMBOUR ASSY | 3CGF532S7 | DEFA 552/553 | 1005-14-320-2667 |
| SLIDE ASSY | 3CGF524B | DEFA 552/553 | 1005-14-327-7325 |
DEFA 554 Spare Parts
OMI manufactures parts and provides overhaul services for the DEFA 554 cannon.
Description |
Part Number |
DEFA model |
Equivalent NSN |
| AXLE, PIN AXE DE BROCH | 3CGF545S10A | DEFA 554 | 1005-14-376-8352 |
| DEVICE REARMEMENT DISPOSITIF REARMEMENT |
3CGF548D | DEFA 554 | 1005-14-418-2960 |
| UNIT, RECUPERATOR ENSEMBLE RECUPERATEUR RETURN |
3CGF549B | DEFA 554 | 1005-14-405-6659 |
| BUSHING, SLEEVE | 3CGF03-12C | DEFA 554 | 3120-14-332-4287 |
| BLOCK, ANTI RECOIL BLOC ANTI-RECUL | 3CGF547S1A | DEFA 554 | 1005-14-376-8382 |
| FLOOR PLANCHER ALIMENTATION | 3CGF545S4A | DEFA 554 | 1005-14-376-8337 |
| ANTI-DOUBLE, SUPPLY ALIMENTATION |
3CGF532-32B | DEFA 554 | 1005-14-409-0120 |
| ANTI-DOUBLE, SUPPLY ALIMENTATION |
3CGF532-32A | DEFA 554 | 1005-14-377-6991 |
| FLAME STREAMER |
3CGF546-87A | DEFA 554 | 1005-14-382-7667 |
| DEVICE, REARMAMENT | 3CGF33E | DEFA 554 | 1005-14-200-4982 |
| LOCK, REARMING | 3CGF522-1E | DEFA 554 | 1005-14-376-8336 |
| CONNECTOR GAS, UNIT | 3CGF542S13C | DEFA 554 | 1005-14-409-0134 |
| PUSH | 3CGF524-2 | DEFA 554 | 1005-14-210-5215 |
| PIN, SPROCKET | 3CGF535-12A | DEFA 554 | 1005-14-345-4216 |
| BARREL, GUN | 3CGF541C | DEFA 554 | 1005-14-409-1981 |
| REDUCER PRESSURE, G | 3CGF541S2A | DEFA 554 | 1005-14-409-0135 |