PWS-24
| PWS-24 | |
|---|---|
 |
|
| Role | Passenger aircraft |
| Manufacturer | PWS |
| First flight | August 1931 |
| Introduction | 1933 |
| Primary user | Polish civilian aviation (LOT Polish Airlines) |
| Produced | 1933-1935 |
| Number built | 11 |
The PWS-24 was a Polish single-engine passenger aircraft for 4 passengers, built in PWS factory, used from 1933 to 1936 by LOT Polish Airlines. In spite of its limited capacity, it was the only series-built airliner of domestic design ever used by LOT
The aircraft was a development of an unsuccessful PWS-21, utilizing its lightweight construction wing (weight 300 kg). A fuselage and stabilizers were new. The main designer was Stanisław Cywiński. The prototype (markings SP-AGR) first flew in August 1931 in Biała Podlaska. After trials and some modifications, it won a Ministry of Communication's contest for a successor of Junkers F-13 in LOT airlines, against Lublin R-XVI. In June 1932 it took the first place in a passenger aircraft race at the international air meeting in Warsaw.
Polish Ministry of Communication ordered a series of 5 aircraft for LOT airlines, built in 1933 (markings: SP-AJF, -AJG, -AJH, -AJJ, -AJK). In 1932, the prototype SP-AGR was fitted with a more powerful engine, the 300 hp Lorraine Algol, instead of the 240 hp Wright Whirlwind J-5. It was later tested with a 400 hp Pratt & Whitney Wasp Junior engine. Maximum speed improved from 185 to 225 km/h, comparing with the basic variant.
In 1934 a production of further 5 aircraft started, with Wasp Junior engines, designated PWS-24bis (markings: SP-AMN, -AMO, -AMP, -AMR, -AMS). Also one PWS-24 was converted to PWS-24bis (SP-ASY, ex. SP-AJH).
PWS-24 were put into use in LOT Polish Airlines from May 1, 1933 on domestic lines. Their flight characteristics and durability proved however worse, than of single-engined Fokker F.VIIa/1m, used by LOT, so their service was not long. In 1935 three PWS-24 (SP-AGR, -AJF, -AJJ) were converted to aerial photography variant, but in 1936 four PWS-24s were broken up. The last, SP-AJJ, was broken up in 1938.
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