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24 SL-GF Dubois DOCILF

GPS: 44.168858, -112.224350

Restoration of 24 SL-GF Dubois DOCILF 2016-2017

Photos by Greg Cobia and Kaarin Engelmann

Greg and Kaarin undertook the task of cleaning, repairing and painting the Dubois Municipal Airport's concrete arrow, generator shed, and beacon tower.

They hope to get it into the Historical Register of National Places.

They have done a great job of making it look like it did during the 1930's.  A little step back in time. See the local TV report of their restoration by clicking here.

Click on small photo to see large version

Dubois Airport with the arrow painted chrome yellow
genrator shed before it was painted
Genrerator shed primed and ready to be painted.
Painting the SL-GF on the top of the generator shed
Painting the site designation number on the top of the generator shed

generator shed number painted on topview of the top of the generator shed from the beacon tower.preparing the beacon for turning on.dusk at the Dubois AirportView of the chrome yellow arrow from the beacon towerlook at that!  It works...

Interior shed photos shown with the permission of the City of Dubois

Location / Airway

Location / Name

IDAHO:  Clark County

Commonly called Dubois Municipal Airport (U41)
24 SL-GF Dubois DOCILF, site No. 24, Department of Commerce intermediate landing field on the Salt Lake-Great Falls airway.
AKA site No. 23, Department of Commerce intermediate landing field
23 SL-GF Dubois DOCILF

gps: 44.168858, -112.224350

Contract Air Mail

C.A.M. #26 Salt Lake City-Great Falls
Salt Lake-Great Falls airway
Pocatello-Great Falls Section

Operator

Contract made 30th day of December 1927 to Alfred Frank
Sub-contract made 6th day of April 1928 between Alfred Frank and National Parks Airways (Inc.)

 

Panoramic

Observations and Notes

The Dubois Arrow/Beacon site is located at a small local airport in the town of Dubois, Idaho. 

This site is unique in that it still has the complete arrow, the 51 foot beacon, and the original generator shed. This is only 1 of 2 that are original to the site, that we have found in the U.S.  The concrete arrow, the 51 foot beacon, and the generator shed are all still in fairly good condition.

The electrical boxes that were used for the rotating beacon are still mounted on the interior wall of the shed, with some of the components still inside the boxes.

The generator shed is 12 feet wide & 14 feet long.  The exposed portion of the arrow from the end of the generator shed to the tip of the arrow is 43 feet in length. Total lenght of arrow is 57 feet.

The pilot would approach the tail of the arrow on a compass heading of 3° (N), and then exit the arrow on a compass heading of 3° (N).

All measurements and compass headings are approximate.

*Due to the arrow being located at an active airport, the use of a drone is prohibited under Federal Law.

Contributors Photos

Greg Cobia and Kaaren Engelmann

Watch video of the beacon working

 

Links

Description Date Publication Link
Dubois.—Department of Commerce intermediate field, (for day operation only), site 24, Salt Lake-Great Falls Airway. One-half mile S. of city on highway. Altitude, 5,158 feet. T shape, 178 acres; two landing strips, 4,800 by 1,000 feet N./S., and 2,800 by 1,100 feet E./W.; gravel, slightly sloping, natural drainage. Pole line to W.; cemetery in NE., corner. No servicing facilities.  September 1, 1931

Airway Bulletin 2
page 39

Dubois.—Department of Commerce intermediate field, site 24, Salt Lake-Great Falls Airway. One-half mile S. of city on highway. Altitude. 5,158 feet. T shape, 178 acres, gravel, slightly rolling, natural drainage; two landing strips. 4,800 feet N./S. and 2,800 by 1.000 feet E./W. Directional arrow marked "24 SL-GF." Pole line to W., cemetery in NE. corner. Beacon and boundary lights. Beacon, 24-inch rotating, with green course lights flashing character- istic "4" (. . . .) No servicing facilities. September 1, 1932 Airway Bulletin 2
page 42
Dubois.—Department of Commerce intermediate field, Site 24, Salt Lake-Great Falls Airway. One half mile S. of city on highway. Altitude, 5,158 feet. T shape, 4,775 feet N./S., by 2,765 by 1,000 feet E./W.; entire field available, gravel, slightly sloping, natural drainage. Shed roof marked "24 SL-GF." Pole line to W.; cemetery in NE. corner. Beacon, approach, boundary and obstruction lights. Beacon, 36-inch rotating clear, with green course lights flashing characteristic "4" (. . . .). No servicing facilities.  June 1, 1933 Airway Bulletin 2
page 44
Dubois.—Department of Commerce intermediate field, site 24, Salt Lake-Great Falls Airway. One-half mile S. of Dubois on highway. Altitude, 5,130 feet. T shape, gravel, slightly sloping, natural drainage; two landing strips. 4,775 feet N./S., 2,765 feet E./W.; entire field available. Shed roof marked "24 SL-GF." Pole line to W.; cemetery in NE. corner. Beacon, boundary, approach, and obstruction lights. Beacon, 36-inch, clear with green course lights flashing characteristic "4" (. . . .). No servicing facilities.  September 1, 1934 Airway Bulletin 2
page 48
Dubois.—Department of Commerce Intermediate field, site 23, Salt Lake-Great Falls Airway. One-half mile S. of Dubois on highway. Lat. 44° 10'; long. 112° 13'. Alt 5,180 feet T-shape, gravel, slightly sloping, natural drainage; two landing strips, 4,775 feet N./S., 2,765 feet E./W.; entire field available. Shed roof marked "23 SL-GF." Pole line to W.; cemetery in NE. corner. Beacon, boundary, approach, and obstruction lights. Beacon, 36-inch rotating, showing alternate green and clear flashes. No servicing. January 1, 1937

Airway Bulletin 2
page 53

Dubois.—Department of Commerce intermediate field, site 23, Salt Lake-Great Falls Airway. One-half mile S. of Dubois on highway. Lat. 44° 10'; long. 112° 13'. Alt. 5,150 feet T-shape, gravel, slightly sloping, natural drainage; two landing strips, 4,775 feet N./S., 2,765 feet E./W.; entire field available. Shed roof marked "23 SL-GF." Pole line to W.; cemetery in NE. corner. Beacon, boundary, approach, and obstruction lights. Beacon, 24-inch rotating, with green course lights flashing characteristic signal "3" (. . . ). No servicing. January 1, 1938 Airway Bulletin 2
page 55

Dubois Municipal Airport U41 on Wikipedia

FAA: Dubois Municipal Airport information U41

AirNav: Dubois Municipal Airport information U41

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