Modesto City-County-Harry Sham Field (KMOD) radio calls

Towered airport with a Class D surface area

Sample calls at KMOD

Modesto City-County-Harry Sham Field has a Class D surface area: establish two-way communication with the tower before entering (AIM 3-2-5 b 3). A reply that uses your call sign, even "standby", establishes it; "aircraft calling, standby" does not. The calls below use runway 10L; the tower assigns the runway in use on the day.

The aircraft is the AIM’s own example, Cessna Three One Six Zero Foxtrot; the squawk codes, altitudes and headings are illustrative. Frequencies, station names and runway numbers are this airport’s, from the FAA data.

1. Listen to the ATIS on 127.7 first and note the letter; "with Information (letter)" on your first call lets the controller skip the weather (JO 7110.65 3-10-1).
2. YouModesto Ground, Cessna Three One Six Zero Foxtrot, at the ramp with Information Alpha, request taxi, VFR departure to the north.
3. ATCCessna Six Zero Foxtrot, Modesto Ground, runway one zero left, taxi via Alpha, hold short of runway one zero left.
4. YouRunway one zero left, taxi via Alpha, hold short of runway one zero left, Cessna Six Zero Foxtrot.
5. The runway, any clearance onto a runway and every hold-short instruction are read back (AIM 4-3-18 a 9). Stay on Ground through the run-up and switch to Tower when ready (AIM 4-3-14 a).
6. YouModesto Tower, Cessna Six Zero Foxtrot, holding short runway one zero left, ready for departure, northbound.
7. ATCCessna Six Zero Foxtrot, Modesto Tower, runway one zero left, cleared for takeoff.
8. YouRunway one zero left, cleared for takeoff, Cessna Six Zero Foxtrot.
9. ATCCessna Six Zero Foxtrot, contact NorCal Approach one two zero point niner five.
10. Youone two zero point niner five, Cessna Six Zero Foxtrot.
11. YouNorCal Approach, Cessna Three One Six Zero Foxtrot, two thousand climbing four thousand five hundred, request VFR flight following to the north.
12. ATCCessna Six Zero Foxtrot, NorCal Approach, radar contact, altimeter three zero zero one.
13. YouAltimeter three zero zero one, Cessna Six Zero Foxtrot.
14. Inbound: call the tower about 15 miles out, before the Class D boundary (AIM 4-3-2 a).
15. YouModesto Tower, Cessna Three One Six Zero Foxtrot, one five miles north, three thousand, with Information Bravo, landing Modesto.
16. ATCCessna Six Zero Foxtrot, Modesto Tower, enter left downwind runway one zero left, report midfield downwind.
17. YouEnter left downwind runway one zero left, report midfield, Cessna Six Zero Foxtrot.
18. YouModesto Tower, Cessna Six Zero Foxtrot, midfield left downwind, runway one zero left.
19. ATCCessna Six Zero Foxtrot, runway one zero left, cleared to land, wind two seven zero at eight.
20. YouRunway one zero left, cleared to land, Cessna Six Zero Foxtrot.
21. The wind is information: acknowledged, not read back. Exit at the first available taxiway or as told, taxi clear of the hold-short markings, and change to Ground only when the tower says (AIM 4-3-21).
22. ATCCessna Six Zero Foxtrot, exit at the next taxiway, contact Modesto Ground one two one point seven.
23. YouExit next taxiway, one two one point seven, Cessna Six Zero Foxtrot.
24. YouModesto Ground, Cessna Six Zero Foxtrot, clear of runway one zero left, taxi to the ramp.

If things change. The tower operates 0700-2100 local. Outside those hours the airport is a non-towered field: self-announce on the CTAF, 125.3 with the airport name first and last, and the surface area reverts to Class E or Class G as published in the Chart Supplement.

Phraseology from AIM 4-2-3; 4-3-18 a 9; 4-3-14; 4-3-21; 4-4-7 b; 4-1-18 a 3; 3-2-5 b 3; 4-3-2 a. What TowerTalk grades against →

The calls you will make here

• How to call Ground for taxi →
• Calling the tower inbound →
• Line up and wait, cleared for takeoff, cleared to land →
• First time flying into a Class D airport →
• How to request VFR flight following →
• How to read the ATIS →

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