LOCKHEED DL-2 SIRIUS (later Altair) NR8494

COMMAND TRANSPORT

This airplane is a Lockheed Sirius Model DL-2 (S/N 165; ATC #378) manufactured during August 1930 by Lockheed Aircraft Corporation, Burbank, CA.  It left the factory with a Pratt & Whitney Wasp C engine (S/N 2036) of 420 HP.  It was a two-place airplane. Almost a year after it was manufactured, it was sold to the U.S. Army Air Corps as officer transport. I include an image of the NASM record, below, so you can see what it was used for, and what its final disposition was a scant 12 years and 1,000 flight hours after it was born at Burbank.

NR8494 visited Tucson three times, on May 3rd, May 5th and May 11, 1931.  Each time it was flown by Captain Ira C. Eaker. On May 3rd he carried Ennis Long as passenger. They were southwest bound from Phoenix, AZ to San Diego, CA. On the 5th he was solo, returning to San Diego from Phoenix.

On May 11th his passenger was Asst. Secretary of War Trubee Davison, himself a pilot who landed at Tucson a few years earlier on 5/23/1927.  Although he didn’t write it in the Register, Eaker was probably at Tucson on May 11th with the group of twenty-five Army pilots in Douglas and Curtiss aircraft who noted in the Remarks column of the Register, "In on May 11th 1931, Enroute to Dayton, Ohio for Air Corps Exercises". They were eastbound en masse from San Diego, CA.

According to the NASM record, this airplane was registered NX and NC to Lockheed, then registered NR April 27, 1931. NR8494 was sold to the U.S. Army Air Corps on July 29, 1931.  It was assigned Air Corps # A.C. 32-232.  In Air Corps livery it was used by General James E. Fechet and Asst. Secretary of War Davison in observing 1931 Air Corps maneuvers (note this designation is after its use for same back in May).

Credit for the photo, above, is in the left sidebar. Here, the airplane is in its military livery and identified as 32-232.

For an unique and exciting view of NR8494 at Bolling Field, Washington, DC, follow this link! There is also an image of this airplane at the NASA archives in the large Langley wind tunnel in July, 1932. Click the thumbnail on that page and note the comparative size of the person standing below the airplane mount structure.

In the fall of 1931, Captain Eaker attempted a new coast-to-coast record flight with the airplane.  He made the flight, but set no record.  32-232 was used as a command transport by Capt. Eaker and Lt. Elwood R. Quesada.  It was flown to Panama.

It was converted to an Altair under Memo 2-386 as of October 17, 1931.  It landed wheels up at least three times (no record of who the pilot was).  It was assigned to Bolling Field, Washington, DC where it served from 1931-38.  It was condemned for further flight at Chanute Field, IL on September 23, 1938.  It had accumulated 1,075 flight hours.  It was scrapped in June 1942.

Image, below, is of the NASM record for 8494 in all its civilian and military aliases (it wore NC, NX, NR and military identification numbers). You can see from this record, when the airplane landed at Tucson it was wearing its NR registration. Eaker did not use an prefix when he signed the Register, simply identifying it at all three visits as simply "8494". You'll also note that it was, by the time of Eaker's landings, converted to the Altair model. Here is a PDF file of the NASM record if you want a copy for yourself.

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To recap, this airplane was originally registered NX8494 (9/11/30) and NC8494 (11/12/30) and NR8494 (4/27/31) by Lockheed. It became the Y1C-23 and assigned A.C. 32-232 when acquired by the USAAC (7/29/31). All the same airplane serial number.

Below are two additional photos of the Altair. The first one is from the collection Roger Holden. Eaker is in the cockpit. Note the differences in the plane compared to the one you have posted. Besides a different exhaust system the plane carries slightly different trim. The cowling is solid yellow. The inset in the vertical stabilizer is yellow and there are two thin horizontal yellow stripes along the fuselage. These are the ‘T’ shape stringers that hold the metal fuselage panels. This photo is most likely earlier than the one at the top of this page.

Lockheed Y1C-23, A.C. 32-232

Lockheed Y1C-23, A.C. 32-232, ca. 1935

Image, below, is from Tim Kalina. Mr. Kalina says about the image, "This shows the Y1C-23 at the old Lockheed plant in Burbank just after rebuild summer in 1935. The wing had been extensively damaged in a wheels-up landing (this happened a number of times through mechanical and also pilot error-forgetting to extend the gear!). This is the new late-style wing with the angled wingtips, heavier horizontally mounted gear aero strut, and the narrower low-profile tires. The horizontal stabilizer and elevators are also the late-style with the external counter-balances on the elevators. The plane also got a new engine and propeller. It also got a new, different paint scheme per the current USAAC Mil standards. This would be A-N Yellow wings and tail-surfaces with True Blue fuselage and cowl."

Lockheed Y1C-23, A.C. 32-232, ca. 1935

Mr. Kalina is sending the USAAC Aircraft History Cards on the Y1C-23. Look for them here soon.

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UPLOADED: 05/01/06 REVISED: 02/14/08, 2/15/08