| ICAO 3-Letter Designator: |
TDB |
|---|---|
| Call Sign: (Telephony) |
THUNDER BAY |
| Aircraft Company: | WELCH AVIATION, INC. (ALPENA, MI) |
| Country of Origin: |
UNITED STATES
|
| Previous Call Sign: | TDA - TREND AIR |
| Next Call Sign: | TDC - TADAIR |