The unit received its first six Alouette III in Nov 1966, while it was based at Nacala in Mozambique. They were usually operated from satellite bases and typically two were deployed at Vila Cabral and four at Mueda (a fifth joined subsequently). 
| |||||||||||||
Models Esq 503 List of helicopters |
| C/N | Version | Built | In this Org | In other Org | |
|---|---|---|---|---|---|
Esquadra 503 Operations |
| Dates | Operation | |
|---|---|---|
| 1973-sep-15 | 1973-sep-16 |  Operação Auréola |
| 1973-jan | 1975-jan | Operation Hurricane |
| 1969-jun-07 | 1969-jun-09 | Operação Zeta |
