FIRMS code

M521 FLORIDA AVIATION FUELING

Deleted Bonded warehouse

This code is deleted in CBP's FIRMS list. Don't use it on new filings. FIRMSapi keeps deleted codes so lookups of old paperwork still resolve; check the port listing for a replacement.

Facility details

FIRMS code: M521
Name: FLORIDA AVIATION FUELING
Address: 4720 NW 20 STREET
MIAMI, FL 33159
Status: Deleted (D)
Facility type: Bonded warehouse (04)
CBP port: Miami, FL (5201)
CBP region: 4
Last changed: 2026-10-23
Data as of: 2026-10-23

Pre-filing validation

Validate M521 before you file

Validation fails M521: it's deleted, the reject ACE returns as 159. Search the port for an active replacement.

curl https://api.firmsapi.com/v1/validate \
  -H "x-api-key: $FIRMSAPI_KEY" -H "content-type: application/json" \
  -d '{"code":"M521","port":"5201","use":"warehouse_entry"}'

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Source: U.S. Customs and Border Protection FIRMS code list, data as of 2026-10-23. FIRMSapi is not affiliated with CBP; confirm bond status and filing details in ACE.