For a description of the format and data included in
Production Tables, see here.
Produced Variants
Type 621
Two-seat primary training biplane with heavily staggered equal-span, single-bay wings and fabric covered steel
tube construction. One 155 h.p. Armstrong Siddeley Mongoose IIIA or IIC, or 215 h.p. Armstrong Siddeley Lynx IVC powerplant. All non-UK produced aircraft featured the Lynx powerplant.
1 aircraft built by A.V. Roe & Co. Ltd., Newton
Heath in late 1929.
G-AAKT
321
1
Mongoose
Prototype; converted to Type 621 Lynx-Tutor as K1797.
1 aircraft built by A.V. Roe & Co. Ltd., Newton Heath in late 1929.
G-AARZ
322
1
Lynx
Prototype, later under Class 'B' conditions as K-4; retained by Avro.
3 aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester, for the Irish
Army Air Corps. Delivered in between March and May 1930.
A.7 - A.9
410-412
3
A.W. Mongoose.
11 aircraft ordered from A.V. Roe & Co. Ltd., Newton
Heath, Manchester, to contract 9373/30. Delivered between May and June, 1930. See Note 4.
K1230 - K1240
11
1
aircraft built by A.V. Roe & Co. Ltd., Newton Heath. Delivered in July 1930.
VH-UOL
413
1
(Mongoose).
To Australian National Airways Ltd.
10
aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester, to contract 49321/30. Delivered between September
and October, 1930. See Note 4.
K1787 - K1796
10
1 aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester, to contract
50505/30. Delivered in October, 1930.
K1797
(1)
Conversion of Type 621 prototype G-AAKT;
known as Type 621 Lynx-Tutor.
1
aircraft built by A.V. Roe & Co. Ltd., Newton Heath in late 1930.
G-AATU
437
1
Second
Lynx Prototype; retained by Avro.
1
aircraft built by A.V. Roe & Co. Ltd., Newton Heath in late 1930.
CF-ANQ
463
1
(Mongoose).
To Armstrong-Siddeley Motors Ltd. of Ottawa. To RCAF in August 1937 as RCAF 224.
1 aircraft built by A.V. Roe & Co. Ltd., Newton Heath in late 1930.
See Note 5
464
1
To
Far East Aviation Co Ltd. as demonstrator for China.
1 aircraft built by A.V. Roe & Co. Ltd., Newton Heath in October 1930.
G-ABFL
477
1
Retained
by Avro. Tested to destruction.
2
aircraft built by A.V. Roe & Co. Ltd., Newton Heath for Air Service Training Ltd. Delivered March 1931.
G-ABIR
497
1
Used
for floatplane instruction, but not indicated as a Type 646.Impressed as HM504,
November 1941.
G-ABIS
498
1
Impressed
as HM505 November 1941.
6
aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester, for the Royal Canadian Air Force. Delivered between
July and September, 1931.
184
- 189
506, 510, 508, 509, 511, 507
6
5 aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester, for the Kwangsi Air Force.
Delivered 1931
512-516
5
2 aircraft ordered from A.V. Roe & Co. Ltd., Newton
Heath, Manchester, for the Danish Naval Air Service (Danske Sovaernets Flyvevaesen). Delivered January, 1932.
113 - 114
550,
551
2
Danish
designation L.B.1V (Land Biplane IV)
2
aircraft built by A.V. Roe & Co. Ltd., Newton Heath for National Aviation Day Displays Ltd. Delivered March 1931.
G-ABZP, G-ABZR
624-625
2
2 aircraft ordered from A.V. Roe & Co. Ltd., Newton
Heath, Manchester, for the South African Air Force. Delivered in 1933(?).
701 - 702
638, 641
2
1 aircraft ordered from A.V. Roe & Co. Ltd., Newton
Heath, Manchester, for the Danish Naval Air Service (Danske Sovaernets Flyvevaesen). Delivered1934(?).
115
774
1
1 aircraft built by A.V. Roe & Co. Ltd., Newton
Heath in October 1930.
G-ADMG
795
1
Avro
Demonstrator. To Royal Hellenic Air Force as E-69.
2 aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester, for the Polish Air Force
(Polskie Wojska Lotnicze), Warsaw. Delivered May, 1935.
826-827
2
30 aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester, for the Royal Hellenic
Air Force (Elliniki Vassiliki Aeroporia). Delivered between March and October, 1936.
E-50 - E-68
891-909
19
E-69
795
(1)
Ex
G-ADMG
E-70
- E-79
910-919
10
1 aircraft transferred to the Royal Canadian Air Force. Delivered August 1937.
224
463
(1)
Ex
Mongoose Trainer CF-ANQ, now fitted with A.W. Lynx.
18 aircraft ordered from A.V. Roe & Co. Ltd., Newton
Heath, Manchester, to contract 113780/31 to meet Specification 18/31. Delivered between October and December, 1931.
K2496 - K2513
18
277 aircraft ordered from A.V. Roe & Co. Ltd., Newton
Heath, Manchester, to contract 195190/32 to meet Specification 25/32. Delivered between March, 1933 and December, 1935.
K3189 - K3307
119
K3308
1
Sole
Type 621 Tutor Mk.II
K3309 - K3371
63
K3381 - K3474
94
40 aircraft ordered from A.V. Roe & Co. Ltd., Newton
Heath, Manchester, to contract 350988/34 to meet Specification 24/34. Delivered between December, 1934 and March, 1935.
K4798 - K4837
40
45 aircraft ordered from A.V. Roe & Co. Ltd., Newton
Heath, Manchester, to contract 411542/35 to meet Specification 24/34. Delivered between August, 1935 and April, 1936.
3 aircraft ordered from the Danish Naval Shipyard (Orlogsvaerftet) for the Danish Naval Air Service
(Danske Sovaernets Flyvevaesen). One delivered in June 1935, and two in
April/May 1937.
116 - 118
3
Greece
62 aircraft ordered from the Greek State Aircraft Factory (Kratiko Ergostasio Aeroplanwn), for the Royal
Hellenic Air Force (Elliniki Vassiliki Aeroporia). Deliveries began in 1936.
????
62
See
Note 1
South Africa
49 aircraft ordered from Aircraft and Artillery
Depot, Roberts Heights, Pretoria, South Africa., for the South African Air Force. Deliveries began in 1935.
1
aircraft built by A.V. Roe & Co. Ltd., Newton Heath in November 1930.
G-ABGH
485
1
Prototype
seaplane; to K2893 September 1932.
1
aircraft ordered from A.V. Roe & Co. Ltd., Newton Heath, Manchester, to contract 174961/32 to meet Specification 26/32.
Delivered in September, 1932.
K2893
(1)
Ex-G-ABGH
9 aircraft ordered from A.V. Roe & Co. Ltd., Newton
Heath, Manchester, to contract 261030/33 to meet Specification 26/34. Delivered between April and September, 1934.
K3372 - K3380
9
2 aircraft ordered from A.V. Roe & Co. Ltd., Newton
Heath, Manchester, to contract 335645/34 to meet Specification 26/34. Delivered in April, 1935.
K3475 - K3476
2
3 aircraft ordered from A.V. Roe & Co. Ltd., Newton
Heath, Manchester, to contract 419033/35 to meet Specification 26/34. Delivered in February, 1936.
40 aircraft ordered from PWS
(Podlaska Wytwórnia Samolotów, or Podlasie Aircraft Works), Biala Podlaska, Poland, for the Polish Air Force.
Deliveries began in 1935.
Total Production By Type and Mark
Total Production By Type
Type
Built New
Conv.
Canc'd
Total
Type
Built New
Type 621 Trainer
83
83
Type 621
577
Type 621 Tutor Mk.I
379
379
Type 623
3
Type 621 Tutor Mk.II
1
1
Type 646
15
Type 621 (Non-U.K. Built)
114
114
595
Type 623
3
3
Type 646 Sea Tutor
15
15
(See Note
2)
595
0
0
Exports of British Built Aircraft to Foreign Air Arms
Polish Derivative Production
Customer
Qty
Type
Original Build
Canada
7
PWS-18
40
Denmark (Navy)
3
40
Greece
30
Ireland
3
Kwangsi
5
Poland
2
South Africa
2
52
Notes
Little is known of Greek production.
Hellenic Air Force history [3] quotes Little is known of Greek production. Hellenic Air Force history [3] quotes "Thirty
british-built airplanes were delivered in 1936 and 62 more were to be domestically produced. In December of 1939 59 Avro 621
were available, while 30 more airplanes were under production at the State Airplane Factory, the production line pace being
about 7 airplanes per month." Photographic evidence exists showing at least serials E106 and E140. Four presumed
ex-RHAF aircraft were impressed as HK833 - HK835 and HK853 to contract (or file or req. no.?) 2AX 9464.
Jackson
[1] also gives an additional number of enginless airframes delivered: 303 military between 1932 and 1936, 7 civil between
1931 and 1938.
Although most sources give these as Typre 621, the Avro Heritage website [6] shows that
they are Type 623.
Origin uncertain, possibly G-AAKT. However, G-AAKT was a Mongoose Trainer [1], and
K1797 is recorded as a Lynx Trainer [7].
Production References
Avro Aircraft
Since 1908, A.J. Jackson (Putnam, 1990)
85 Years Of South African Air Force, Winston Brent
(Freeworld Publications, 2007)
