Page No. 1 2 3 4 5 6 7 8 9

Rev No. 8 7 7 7 7 7 7 7 8 DEPARTMENT OF TRANSPORTATION
FEDERAL AVIATION ADMINISTRATION

G39EU
Revision 8
Burkhart Grob
Model G103 TWIN ASTIR
Model G103 TWIN II
Model G103A TWIN II ACRO
Model G103C TWIN III ACRO March 22, 2007

TYPE CERTIFICATE DATA SHEET NO. G39EU

This Data Sheet, which is part of type Certificate No. G39EU prescribes conditi ons and limitations under which the product for which the Type Certificate was issued meets the airwor thiness requirements of the Federal Aviation Regulations.

Type Certificate Holder BURKHART GROB LUFT - UND
RAUMFAHRT GmbH & CO KG Am Flugplatz
D-8939 Mattsies Federal Republic of Germany

I. Model G103 TWIN ASTIR (Utilit y Category), approved June 26, 1978.

Airspeed Limits (I.A.S.) Maximum Airs peeds (Calm Air Unless Otherwise Noted) Never Exceed (V NE ) 135 kts 155 mph 250 km/hr With Airbrakes Extended 135 kts 155 mph 250 km/hr In Rough Air (V S ) 108 kts 124 mph 200 km/hr Maneuvering (V A ) 92 kts 105 mph 170 km/hr Aero Tow (V T ) 92 kts 105 mph 170 km/hr Winch Tow (V W ) 64 kts 74 mph 120 km/hr

C.G. Range 10.24 in to 18.11 in (260 mm to 460 mm) aft of datum.

Datum Leading edge of wing at root.

Empty Weight See Flight Handbook.

Leveling Means Flight Handbook, Chapter VI. Maintenance Handbook, Chapter IV.

Maximum Weight 1435 lbs (650 kg.) with or without water ballast.

No. of Seats 2-fixed seats with Seat 1 located 44. 9 in (1140 mm) forward of datum and Seat 2 located 0.4 in (11 mm.) behind datum.

Water Ballast 2 wing water bags, each 45 liters (12 ga l.) (100 lb.) at position 11.7 in. (297 mm) aft of
datum.

Baggage Maximum 22 lb. (10 kg) at C.G.Page 2 of 9 G39EU

Control Surface Movements Aileron Up: 3.541 ± 0.394 in. (radius 8.19 in.)

Down 1.77 ± 0.31 in. The Radius is the distance measured from the hinge line of the aileron at the inboard edge of the aileron.

Elevator Up: 3.58 ± 0.24 in. (radius 8.74 in.)
Down: 2.79 ± 0.19 in. The radius is the distance measured from the hinge line of the elevator at the elevator mid or center point.

Rudder Right: 8.78 ± 0.39 in. (radius 17.72 in.)
Left: 8.78 ± 0.39 in. The radius is the distance measured from the hinge line of the
rudder at the base of the rudder.

Airbrake At inner level: Up: 7 7 in.

Rated load on Winch and Auto Tow (Weak Link) Maximum 600 kg (1323 lb.)

II. Model G103 TWIN II (Utility Category), Approved March 26, 1982.

Airspeed Limits (I.A.S.) Maximum Air Speeds (Calm Air Unless Otherwise Noted) Never exceed (V NE ) 0 - 6500 ft alt 135 kts 155 mph 250 km/hr 6501 - 10000 ft alt 128 kts 146 mph 237 km/hr 10001 - 13000 ft alt 121 kts 139 mph 225 km/hr 13001 - 16500 ft alt 115 kts 132 mph 213 km/hr 16501 - 19000 ft alt 109 kts 125 mph 202 km/hr With Airbrakes extended 135 kts 155 mph 250 km/hr In rough air (V S ) 92 kts 105 mph 170 km/hr Maneuvering (V A ) 92 kts 105 mph 170 km/hr Aero Tow (V T ) 92 kts 105 mph 170 km/hr Winch tow (V W ) 65 kts 74 mph 120 km/hr

C.G. Range +10.24 in. (260 mm) to +18.11 in. (460 mm) aft of datum.

Datum Leading edge of wing at root.

Empty Weight See Flight Manual

Leveling Means Flight Manual, Chapter II.

Maximum Weight 1279 lb (580 kg).

No. of Seats 2-fixed seats with Seat 1 located 45. 3 in (1150 mm) forward of datum and Seat 2 located 1.6 in. (40 mm) behind datum.

Baggage Maximum 22 lb. (10 kg) at C.G.

Control Surface Movements Aileron Up 3.541 ± 0.394 in. (radius 8.19 in.)
Down 1.97 ± 0.31 in. The radius is the distance measured from the hinge line of the aileron at the inboard edge of the aileron.Page 3 of 9 G39EU

Control Surface Movements, cont’d

Elevator Up 3.54 ± 0.24 in. (radius 8.35 in.)

Down 2.76 ± 0.20 in. The radius is the distance measured from the hinge line of the elevator at the elevator mid or center point.

With elevator No. 103A-3520 for gliders modified by TM 315-16 Up 3.82 ± 0.31 in. (radius 9.17 in.)
Down 2.99 ± 0.24 in. The radius is the distance measured from the hinge line of the elevator at the elevator mid or center point.

For glider serial numbers 3730 through 3838 modified by AM 315-12 Up 3.82 ± 0.31 in. (radius 9.65 in.)
Down 2.99 ± 0.24 in. The radius is the distance measured from the hinge line of the elevator at the elevator mid or center point.

For glider serial number 3839 and subsequent and gliders modified by AM 315-13/1, and for glider serial numbers 33879 and subse quent by AM 315-14 (spring trim system)

Up 3.74 ± 0.31 in. (radius 9.45 in.)
Down 2.92 ± 0.24 in. The radius is the distance measured from the hinge line of the elevator at the elevator inboard edge.

Rudder Right 9.17 ± 0.39 in. (radius 17.72 in.)
Left 9.17 ± 0.39 in.

The radius is the distance measured from the hinge line of the
rudder at the base of the rudder.

Airbrakes At inner level Up: 7.0 in

Rated Load on Winch and Auto Tow (Weak Link) Maximum 1323 lb. (600 kg).

III. Model G103A TWIN II ACRO, (Utility and Aerobatic Categories), Approved April 2, 1984. (Similar to TWIN II except for stronger sp ar in the wing. Modifications per Gr ob Service Bulletin OSB315-66 are required for operation in Aerobatic Category)

Airspeed Limits (I.A.S.) (for category utility) Maximum Airspeed (Calm Air Unless Otherwise Noted) Never exceed (V NE ) 0 - 6500 ft alt 135 kts 155 mph 250 km/hr 6501 - 10000 ft alt 128 kts 146 mph 237 km/hr 10001 - 13000 ft alt 121 kts 139 mph 225 km/hr 13001 - 16500 ft alt 115 kts 132 mph 213 km/hr 16501 - 19000 ft alt 109 kts 125 mph 202 km/hr With Airbrakes extended 135 kts 155 mph 250 km/hr In rough air (V S ) 92 kts 105 mph 170 km/hr Maneuvering (V A ) 92 kts 105 mph 170 km/hr Aero Tow (V T ) 92 kts 105 mph 170 km/hr Winch tow (V W ) 65 kts 74 mph 120 km/hrPage 4 of 9 G39EU

Airspeed Limits (I.A.S.) Maximum Airspeed (a pplies to serial number 33879 and subsequent only) (for category aerobatic) (Calm Air Unless Otherwise Noted) Never exceed (V NE ). 0 - 6500 ft alt 135 kts 155 mph 250 km/hr 6501 - 10000 ft alt 128 kts 146 mph 237 km/hr 10001 - 13000 ft alt 121 kts 139 mph 225 km/hr 13001 - 16500 ft alt 115 kts 132 mph 213 km/hr 16501 - 19000 ft alt 109 kts 125 mph 202 km/hr With Airbrakes extended 135 kts 155 mph 250 km/hr In rough air (V S ) 98 kts 112 mph 180 km/hr Maneuvering (V A ) 98 kts 112 mph 180 km/hr Aero Tow (V T ) 92 kts 105 mph 170 km/hr Winch tow (V W ) 65 kts 74 mph 120 km/hr

C. G. Range 10.24 in. (260 mm) to 18.11 in (460 mm) aft of datum.

Datum Leading edge of wing at root.

Empty Weight See Flight Manual.

Leveling Means Flight Manual, Chapter II.

Maximum Weight 1279 lb (580 kg).

No. of Seats 2- fixed seats with Seat 1 located 45.3 in. (1150 mm) forward of datum and Seat 2 located 1.6 in. (40 mm) behind datum.

Baggage Maximum 22 lb. (10 kg) at C.G.

Control Surface Movements Aileron Up 3.541 ± 0.394 in. (radius 8.19 in.)
Down 1.97 ± 0.31 in. The radius is the distance measured from the hinge line of the aileron at the inboard edge of the aileron.

Elevator Up 3.82 ± 0.31 in. (radius 9.45 in.)
Down 2.99 ± 0.24 in. The radius is the distance measured from the hinge line of the elevator at the elevator mid or center point.

For gliders serial numbers 3730-K through 3838-K

Up 3.82 ± 0.31 in. (radius 9.65 in.)

Down 2.99 ± 0.24 in. The radius is the distance measured from the hinge line of the elevator at the elevator mid of center point.

For glider 3839-K and subsequent and those gliders modified by AM 315-13/1, and for glider serial numbers 33879 and subseque nt by AM 315-14 (spring trim system) Up 3.74 ± 0.31 in. (radius 9.45 in.)
Down 2.91 ± 0.24 in. The radius is the distance measured from the elevator hinge line at the elevator inboard edge.

Rudder Right 9.17 ± 0.39 in. (radius 17.72 in.)
Left 9.17 ± 0.39 in. The radius is the distance measured from the hinge line of the
rudder at the base of the rudder.

Airbrakes At inner level: Up 7.0 inPage 5 of 9 G39EU

Rated Load on Winch and Auto Tow (Weak Link) Maximum 1662 lb (754 kg).

IV. Model G 103 C TWIN III ACRO (Aerobati c Category), Approved September 18, 1989. (Similar to TWIN II except for: wing. Modifications per Grob Service Bu lletin OSB315-66 are required for operation in Aerobatic Category)

Airspeed Limits (I.A.S.) Maximum Airs peed (Calm Air Unless Otherwise Noted) Never exceed (V NE ) 0 - 6500 ft alt 151 kts 174 mph 280 km/hr 6501 - 10000 ft alt 143 kts 165 mph 265 km/hr 10001 - 16500 ft alt 130 kts 149 mph 240 km/hr 16501 - 23000 ft alt 116 kts 134 mph 215 km/hr 23001 - 29500 ft alt 103 kts 118 mph 190 km/hr With Airbrakes extended 151 kts 174 mph 280 km/hr In rough air (V S ) 108 kts 124 mph 200 km/hr Maneuvering (V A ) 100 kts 115 mph 185 km/hr Aero Tow (V T ) 100 kts 115 mph 185 km/hr Winch tow (V W ) 76 kts 87 mph 140 km/hr

C.G. Range 10.63 in. (270 mm) to 18.90 in. (480 mm) aft of datum.

Datum Wing leading edge at the root rib.

Empty Weight See Flight Manual.

Leveling Means See Maintenance Manual Chapter 7.

Maximum Weight 1323 lb (600 kg)

No. of Seats 2-fixed seats with Seat 1 located 44.57 in. (1132 mm) forward of datum and Seat 2 located 1.38 in. (35 mm) behind datum.

Baggage Maximum 22 lb. (10 kg) at C. G. 31.89 in. (810 mm) aft of datum.

Control Surface Movements Aileron Up 2.95 ± 0.31 in. (radius 8.46 in.)
Down 1.97 ± 0.20 in. ` The radius is the distance measured from the hinge line of the aileron at the inboard edge of the aileron.

Elevator Up 4.02 ± 0.31 in. (radius 9.45 in.)
Down 2.91 ± 0.24 in. The radius is the distance measured from the hinge line of the elevator at the elevator inboard edge.

Rudder Right 9.17 ± 0.39 in. (radius 17.72 in.)
Left 9.17 ± 0.39 in. The radius is the distance measured from the hinge line of the
rudder at the base of the rudder.

Airbrakes At inner level Up 5.0 in

Rated Load on Winch and Auto Tow (Weak Link) Maximum 1863 lb (845 kg)Page 6 of 9 G39EU

DATA PERTINENT TO ALL MODELS.

Serial Nos. Eligible See Import Requirements.

Certification Basis FAR 21.23 and FA R 21.29 effective February 1, 1965.

For Model G103 TWIN ASTIR:

Federal Republic of Germany Airworthine ss Requirements for Sailp lane and Powered Sailplanes (LFSM), dated October 1975.

Type Certificate G39EU issued June 26, 1978. Date of Application for Type Certificate: December 30, 1976.

For Model G103 TWIN II:

Compliance with FAR 21.23 as revised by Amendment 21-53 has been shown utilizing the provisions of Advisory Circular 21.23- 1 dated 12 January 1981, S ection 5, paragraph a. The airworthiness requirements met unde r this provision are the Joint Airworthiness Requirement for Sailplane and Powered Sailplane (JAR-22) dated 1 April 1980 including Amendments 1 through 2, and Section 5, pa ragraph (e)(6) of Advisory Circular 21.23-1 dated 12 January 1981. Joint Airworthin ess Requirements and Powered Sailplanes (JAR-22) dated 1 April 1980.

Type Certificate G39EU amended 26 March 1982. Date of Application for amendment of the Type Certificate: 1 July 1980.

For Model G103A TWIN II ACRO:

Compliance with FAR 21.23 as revised by Amendment 21-53 has been shown utilizing the provisions of Advisory Circular 21.23- 1 dated 12 January 1981, S ection 5, paragraph a. The airworthiness requirements met unde r this provision are the Joint Airworthiness Requirement for Sailplane s and Powered Sailplanes (JAR-22) dated 1 April 1980 including Amendments 1 through 2, and Section 5, paragraph (e)(6) of Advisory Circular 21.23-1 dated 12 January 1981.

Type Certificate G39EU amended 2 April 1984. Date of Application for amendment of the Type Certificate: 27 June, 1983.

For Model G103C TWIN III ACRO:

Compliance with FAR 21.23 as revised by Amendment 21-53 has been shown utilizing the provisions of Advisory Circular 21.23- 1 dated 12 January 1981, S ection 5, paragraph a. The airworthiness requirements met unde r this provision are the Joint Airworthiness Requirement for Sailplane s and Powered Sailplanes (JAR-22) dated 1 April 1980 including Amendments 1 through 2, and Section 5, paragraph (e)(6) of Advisory Circular 21.23-1 dated 12 January 1981.

Type Certificate G39EU amended September 18, 1989. Date of Application for amendment of the type Certificate: 12 June 1989.

Import Requirements A U.S. Standard Airworthiness Certificate may be issued on the basis of a GermanExport Certificate of Airworthiness signed by a representative of the LuftfahrtBundesamt (LBA), containing the following statement:

"The glider covered by this certificate has been examined, tested and found to comply with the type design approved unde r FAA Type Certificate No. G39EU and to be in a condition for safe operation.”

or,Page 7 of 9 G39EU

Import Requirements, cont’d For gliders imported from a third-party country that have never held a U.S. airworthiness certificate, either an export certificate of ai rworthiness from the third-party country or a detailed conformity inspection performed by a FAA manufacturing DAR or a FAA manufacturing inspector, shall be required prio r to issuance of a standard airworthiness certificate. (Note: A FAA maintenance insp ector is not authori zed to perform this conformity inspection.) Eligibility for a U. S. Standard Airworthiness Certificate under
this condition is established th rough compliance with FAR 21.183(d)

Eligible Serial Numbers a) For the Model G103 TWIN ASTIR:

Eligible Serial Numbers: 3001 through 3291

Note: serial numbers 3001 through 3031 (prema turely exported) are eligible for a
U.S. Standard Airworthiness Certificate when the glider has been modified in accordance with the LBA-approved Grob Technical Information TM103-3.

b) For the Model G103 TWIN II:

Eligible Serial Numbers: Serial numbers 3501 through 3878 Serial numbers 33879 through 34078

Note: serial numbers 3543, 3601 th rough 3604, 3609, 3615, 3648, 3650, 3652 and 3664 (prematurely exported) are eligible for a U.S. Standard Airworthiness Certificate when the glider has been m odified in accordance with the LBA-approved
Grob Technical Information TM315-14

c) For the Model G103A TWIN II ACRO:

Eligible Serial Numbers: Serial numbers 3544-K-(_) through 3878-K-(_) Serial numbers 33879-K-(_) through 34078-K-(_)

Note: the following serial numbers (prematu rely exported) are eligible for a U.S.
Standard Airworthiness Certificate when th e glider has been modified in accordance with the LBA-approved Grob Technical Information TM315-23:

d) For the Model G103C TWIN III ACRO:

Eligible Serial Numbers: Serial numbers 34101 through 34203

Eligible Serial Numbers, cont’d Note: serial numbers 34107, 34110 and 34121 (p rematurely exported) are eligible
for a U.S. Standard Airworthiness Certificat e when the glider has been modified in accordance with the LBA-approved Grob Technical Information TM315-44

Equipment For the M odel G103 TWIN ASTIR

The Required Equipment for the Kinds of A pproved Operations are listed in the GROB Model G103 TWIN ASTIR Flight Manual LBA-approved 5 June 1978. 3799-K-66 3843-K-89

3815-K-76 3847-K-93

3822-K-81 3848-K-94

3823-K-82 3850-K-96

3840-K-86 3852-K-98

3841-K-87 3854-K-100

3842-K-88 3855-K-101Page 8 of 9 G39EU

Equipment, cont’d
For the Model G103 TWIN II

The Equipment Approved for the GROB M odel G103 TWIN II is lis ted in the GROB Master Equipment List dated 24 September 1981.

The Required Equipment for the Kinds of A pproved Operations are listed in the GROB Model G103 TWIN II Flight Ma nual, LBA-approved 17 March 1982.

For Model G103A TWIN II ACRO

The Equipment approved for the GROB Mode l G103A TWIN II ACRO is listed in the GROB Master Equipment List dated 22 June 1983.

The Required Equipment for the Kinds of A pproved Operations are listed in the GROB
Model G103A TWIN II ACRO Flight Manual, LBA-approved 12 July 1983.

For Model G103C TWIN III ACRO

The Equipment approved for the GROB Mode l G103C TWIN III ACRO is listed in the GROB Master Equipment List dated June 1989.

The Required Equipment for the Kinds of A pproved Operations are listed in the GROB
Model G103C TWIN III ACRO Flight Manual, Revision 1, LBA-approved September 8,
1989.

Service Information GROB Technical Information (Service Bulletins), publis hed in the English language for the U.S. Type Design that carry a stat ement "Approved by the Luftfahrt-Bundesamt (LBA)" may be interpreted as FAA-approved.

Available documents for GROB Model G103 TWIN ASTIR: - Flight Manual, LBA-approved 5 June 1978 or later approved revision
- Maintenance Manual for GROB G103 TWIN ASTIR, LBA-approved 5 June 1978 - Repair Instructions for the GR OB G103 TWIN ASTIR, dated 5 June 1978

Available documents fo r GROB Model G103 TWIN II: - Flight Manual, LBA-approved 17 March 1982 or later approved revision - Airworthiness Limitations (Section X) of the G103 TWIN II Maintenance Handbook, LBA-approved 17 March 1982 - Repair Instructions for the GR OB G103 TWIN II, dated September 1981

Available documents for GR OB Model G103A TWIN II ACRO: - Flight Manual, dated 12 July 1983 a nd Model G103 TWIN II Flight Manual LBA- approved 17 March 1982 or later approved revision - Airworthiness Limitations (Section X) of the G103 TWIN II Maintenance Handbook, LBA-approved 17 March 1982 - Repair Instructions for the GR OB G103 TWIN II, dated September 1981

Available documents for GR OB Model G103C TWIN III ACRO: - Flight Manual, Revision 1, LBA-approve d 8 September 1989 or la ter approved revision
- Maintenance Manual for GROB G103C TWIN III ACRO, LBA-approved January
1989 - Airworthiness Limitations (Section XI, FAA) of the G103C TWIN III ACRO Maintenance manual, LBA-approved January 1989 - Repair Instructions for the GR OB G103C TWIN III ACRO, dated 26 May 1989

NOTES

NOTE 1. Current weight and balance report including list of equipment in certificated empty weight, and loading instructions, when necessary, must be provided for each glider at the time of original certification.Page 9 of 9 G39EU

NOTES, cont’d

NOTE 2. All placards and markings listed in Section II of th e LBA-approved Grob Flight Manual must be installed in
the location defined.

NOTE 3. LBA-approved Section XI of the GROB TWIN ASTIR Glider Maintenance Manual dated 5 June 1978 and LBA-approved Section X of the GROB Glider Maintenance Manual for Models -GROB G103 TWIN II LBA-approved 17 March 1982, and -GROB G103 TWIN II ACRO, LBA-approved 17 March 1982 and LBA-approved Section 11 of the GROB G103C TWIN III ACRO Glider Maintenance Manual dated January 1989 specifies mandatory replacements times, structural in spection intervals, and related structural inspection procedures. These airworth iness limitations may not be ch anged without FAA approval.

NOTE 4. All external portions of the glid er exposed to sunlight must be pain ted white except the wing tips, nose of fuselage, ailerons, and rudder. The colors of the excepted areas must be approved by Grob.

NOTE 5. Major airframe repairs must be accomplished at F AA certificated repair stations rated for composite construction of small aircraft, usi ng Grob Werke repair methods for model of interest, approved by the FAA.

NOTE 6. Tost release hooks for the Gr ob Model G103 TWIN III ASTIR to be ma intained in accordance with Tost Manual E75 and Europa G73 published in May 1975.

All Tost tow release hooks for Grob gliders are to be maintained in accordance w ith the latest LBA/EASAapproved Tost Manual for each particular model hook.

NOTE 7. G103 C TWIN III ACRO, Serial Number 34171 and up, incorporates the following improvements. The
modifications are: a) Headrest, Part Number 103SL-7301/7302, b) Main Landing Gear Frame S upports, Part Number 103SL-2017/2018; c) Steerable Nose Landing Gear, Part Number 103SL-5100; d) Rudder: Shape and Rudder Control Att achment, (Actuator Rib Part Number 103SL-3175) e) Pedal Units, Part Number 103SL-4420 and 103SL-4800; f) Airbrake Operating Rear Lever, Part Number 103SL-4412; g) Horizontal Stabilizer Hinges, Part Number 115-1276 (one required) and 115-1278 (one required); h) Elevator hinges, Part Number 103SL-3721 (two required); i) Resin - hardener system: 1) Resin: Type L285 from Ma rtin G. Scheufler MGS Company 2) Hardener: Type 285, 286 and 287 from MGS Company.

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