FIRMSapi Get a free key

FIRMS code

C542 GMC, NAO/LAD WILMINGTON ASMBLY PLT.

Deleted Foreign trade zone

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
C542
Name
GMC, NAO/LAD WILMINGTON ASMBLY PLT.
Address
Boxwood & Dodson
Wilmington, DE 19899-1512
Status
Deleted (D)
Facility type
Foreign trade zone (02)
CBP port
Wilmington, DE (1103)
CBP region
1
Last changed
2026-10-23
Data as of
2026-10-23

Pre-filing validation

Validate C542 before you file

Validation fails C542: 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":"C542","port":"1103","use":"ftz_admission"}'
Get a free key Validation guide

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.