List of Service Bulletins

GROB G-109 · Service Bulletins

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Overview

This document is a list of service bulletins for the Grob G-109 aircraft, detailing various modifications, inspections, and updates required for compliance and safety. It includes information on mandatory, recommended, and optional service bulletins, along with their issue dates and affected serial numbers.

Service bulletins cover modifications and inspections for Grob G-109.
Bulletins include changes to weight limits and equipment for certification.
Some bulletins are mandatory while others are optional or recommended.
The document is valid as of April 10, 2026.
Specific serial numbers are affected by various bulletins.
Updates include installation of new engines and safety equipment.
Inspections are required for components like undercarriage and control systems.
The document is published by Grob Aircraft.

Document

Source

Originally published by grob-aircraft.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.

View original at grob-aircraft.com

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Document details

Type: Service Bulletins
Year: 2026
File size: 180 KB
Publisher: grob-aircraft.com
Language: de

Specifications & performance

Extracted from this document.

Specifications

Max weight kg: 825

About this document

What is the List of Service Bulletins?

The List of Service Bulletins is a service bulletins for the GROB G-109, dated 2026.

Where does the List of Service Bulletins come from?

This copy of the List of Service Bulletins was originally published by grob-aircraft.com and is hosted on Sprinkle as a free, searchable reference copy.

What year was the List of Service Bulletins published?

The List of Service Bulletins — the GROB G-109 service bulletins on file — is dated 2026.

Documentation completeness

1/7

Most owners only have the POH. Here's the essential set for the GROB G-109.

Pilot's Operating Handbook / AFM
Checklist
Maintenance Manual
Parts Catalog (IPC)
Systems & Wiring
Service Bulletins on file
Type Certificate (TCDS)

More GROB G-109manuals & documents

In this document

Service Bulletin Overview

The document lists service bulletins for the Grob G-109, including their issue dates and the nature of the modifications or inspections required.

Weight Changes

Bulletin 817-1 details an increase in maximum weight from 810 kg to 825 kg to enhance payload capacity.

Equipment Modifications

Several bulletins address modifications for specific certifications, including CVFR certification for both G-109 and G-109B.

Inspection Requirements

Bulletins outline mandatory inspections for components such as the main undercarriage legs and elevator hinges.

Optional Modifications

Bulletins also include optional modifications, such as the installation of noise-reducing exhaust systems.

Publication and Validity

The document is published by Grob Aircraft and is valid as of April 10, 2026.

Safety notes

Mandatory inspections must be completed as specified in the bulletins.
Certain modifications are required for compliance with certification standards.
Failure to adhere to service bulletins may affect aircraft safety and legality.

Full document text

List of Service Bulletins Type: G 109 Ref. TCDS No.: EASA.A.249 (LBA 817) Plot Filter: approved List State: 10-Apr-2026 SB No. / Issue Title Alert Mandatory Recommended Optional G 109 G109B Issue date Associated Change Note Remarks 817-1 Änderung des Fluggewichtes von 810 kg auf 825 kg zur Erhöhung der Zuladung Increase of max. weight from 810 kg to 825 kg X 12-May-1981 Alle Werk-Nr. außer 6001 und 6010 All serial-no.s except 6001 and 6010 817-2 Abweichungen gegenüber dem Gerätekennblatt Nr. 817 für Flugzeuge mit holländischer Zulassung Special equipment of GROB 109 for the export to the Netherlands X 27-Jul-1981 Ab Werk-Nr 6011 From serial-no 6011 817-3 Einbau eines Dämpfers in die Bremsklappensteuerung Installation of a damper in the airbrake control system X 28-Sep-1981 wahlweise (ab 6052 serienmäßig) optional, standard equiment as of S/N 6052 817-4 Erweiterung des Flughandbuches G109, Ausgabe März 1981 auf Änderungsstand 01.10.81 Supplements of Flight Manual GROB G109, published March 1981 for revision dated 01.10.81 X 1-Oct-1981 817-5 Austausch von Handbüchern, Cockpit-Schildern und Symbolen beim Antrag auf Zulassung in USA Exchange of manuals, cockpit placards and symbols for application of certification in USA. X 12-Jul-1982 Genannte Werk-Nr. zwischen 6028 und 6135 Affected S/N between 6028 and 6135 817-6 Austausch des Motorträgers Exchange of the engine mount X 14-May-1982 Werk-Nr 6010 - 6073 S/N 6010 - 6073 817-8/2 Ausgabe für USA vom 19.01.83 Edition for USA, dated 19.01.83 X 817-9 Zulässiger Umbau der Kraftstoffanlage Optional modification of the fuel system X 30-Jun-1983 Alle Werk-Nr. 6001 - 6159 All S/N 6001 - 6159 817-10 Einschränkung des Schwerpunktbereiches und Verfahren zum Beenden des Trudelns Change of center of gravity and spin recovery X 2-May-1983 Alle Werk-Nr. 6001 - 6159 All S/N 6001 - 6159 LTA / AD 83-104 817-10/2 Change of center of gravity and spin recovery (US Edition) X 2-May-1983 Alle Werk-Nr. 6001 - 6159 All S/N 6001 - 6159 LTA / AD 83-104 817-11 Einbau von Flugsicherungsausrüstung für kontrollierten Sichtflug (CVFR) bei der GROB G109 CVFR-certification of GROB G109 (temporary only for Germany) X 1-Sep-1983 Alle Werk-Nr. 6001 - 6159 All S/N 6001 - 6159 Affected Models Category Print Date: 15.04.2026 List of SB_SL_Pubs_817, List of SB # GROB AIRCRAFT + HELSING + CONTRACTORS page 1 of 6 List of Service Bulletins Type: G 109 Ref. TCDS No.: EASA.A.249 (LBA 817) Plot Filter: approved List State: 10-Apr-2026 SB No. / Issue Title Alert Mandatory Recommended Optional G 109 G109B Issue date Associated Change Note Remarks Affected Models Category 817-12 Einbau von Flugsicherungsausrüstung für kontrollierten Sichtflug (CVFR) bei der GROB G109B CVFR-certification of GROB G109B (temporary only for Germany) X 26-Sep-1983 Alle Werk-Nr.ab 6200 All S/N from 6200 817-14 Austausch von Handbüchern und Cockpit-Schildern beim Antrag auf US-Zulassung der G 109 B Manuals and cockpit placards for US-registered GROB G109B X 2-Apr-1984 Betroffene Werk-Nr. Affected S/N 817-16 Änderungen am Motorsegler GROB G 109 für die Zulassung in Kanada Modification of GROB G109 with Canadian registration X 22-Oct-1984 Werk-Nr. 6011 - 6159 S/N 6001 - 6159 817-17 Erweiterung des Flughandbuches GROB G109B Revision of the Flight Manual GROB G109B X 10-Jan-1985 Alle Werk-Nr.ab 6200 All S/N from 6200 817-18 Änderungen am Motorsegler GROB G 109 B für die Zulassung in Kanada Modification of GROB G109B with Canadian registration X 6-May-1985 Alle Werk-Nr.ab 6200 All S/N from 6200 817-19 Überprüfung und Austausch der Federbeine des Hauptfahrwerks bei G109 und G109B Inspection and exchange of main undercarriage legs of G109 and G109B X X 18-Mar-1985 Werk-Nr. 6001 - 6159 und 6200 - 6317 S/N 6001 - 6159 and 6200 - 6317 LTA / AD 85-132 817-20 Maßnahmen zur Verbesserung des Schwingungsverhaltens der GROB G109B Measures for the improvement of the flutter behaviour of the GROB G109B X 29-Jan-1986 Werk-Nr. 6200 - 6434 S/N 6200 - 6434 LTA / AD 85-218/2 817-21 Änderungen am Motorsegler GROB G 109B für die Zulassung in Frankreich Modification of GROB G109B for certification in France X 3-Feb-1986 Alle Werk-Nr.ab 6200 All S/N from 6200 817-22 Erweiterung des Flug- und Wartungshandbuches und wahlweiser Einbau zusätzlicher Ausrüstung Extension of Flight and Maintenance Manual G109 and optional installation of additional equipment X 1-May-1986 Alle Werk-Nr. 6001 - 6159 All S/N 6001 - 6159 LTA / AD 86-219 817-23 Überprüfung und Austausch des unteren Dichtringes im Brandhahn Inspection and exchange of the lower sealing ring in the fuel shut-off valve X X 10-Jul-1987 Werk-Nr. 6001 - 6159 und 6200 - 6445 S/N 6001 - 6159 and 6200 - 6445 LTA / AD 87-142 Print Date: 15.04.2026 List of SB_SL_Pubs_817, List of SB # GROB AIRCRAFT + HELSING + CONTRACTORS page 2 of 6 List of Service Bulletins Type: G 109 Ref. TCDS No.: EASA.A.249 (LBA 817) Plot Filter: approved List State: 10-Apr-2026 SB No. / Issue Title Alert Mandatory Recommended Optional G 109 G109B Issue date Associated Change Note Remarks Affected Models Category 817-23/1 Austausch des Dichtkolbens im Brandhahn Exchange of the sealing piston in the fuel shut-off valve X X 1-Sep-1992 Werk-Nr. 6001 - 6159 und 6200 - 6445 S/N 6001 - 6159 and 6200 - 6445 LTA / AD 87-142/2 817-24 Im Rahmen einer Änderung kann der Motorsegler G109 mit dem Flugmotor LIMBACH L2400 EB 1.A und dem Propeller MTV-1-A/L 160- 03 ausgerüstet werden Approved installation of the LIMBACH L2400 EB 1.A engine in combination with the MÜHLBAUER propeller MTV-1-A X 20-Sep-1989 Alle Werk-Nr. 6001 - 6159 All S/N 6001 - 6159 817-25 Überprüfung und Austausch der beiden mittleren ruderseitigen Höhenruderlager Inspection and exchange of the two inner elevator hinges X 9-Nov-1987 Alle Werk-Nr. 6200 - 6445 All S/N 6200 - 6445 LTA / AD 88-50 817-26 Im Rahmen einer Änderung kann der Motorsegler G109B mit einer lärmmindernden Auspuffanlage ausgestattet werden

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Optional installation of a noise reduced exhaust system in the G109B X 12-Dec-1989 Alle Werk-Nr.ab 6200 All S/N from 6200 817-27 Einbau einer Fußspitzenbremse Installation of toe-operated brakes X Alle Werk-Nr. 6001 - 6159 nicht veröffentlicht All S/N 6001 - 6159 not published 817-28/1 Erhöhung der Betriebszeit Extension of service life X X 25-Nov-1991 Alle Werk-Nr. All S/N LTA / AD 92-198 817-29 Überprüfung und ggf. Ersatz von Stehbolzen in der Bolzenplatte der Wurzelrippe Inspection and - if necessary - replacement of studs in the root rib stud plate X 6-Aug-1990 Werk-Nr. 6200 - 6362 S/N 6200 - 6362 LTA / AD 90-315 817-30 Einbau des Flugmotors L2400 EB 1.AA mit Propeller MTV-1-A/L 160- 03 in G109B Approved installation of the L2400 EB 1.AA engine in combination with the MTV-1-A/L 160-03 propeller in the G109B X 26-Sep-1990 Alle Werk-Nr. All S/N 817-31 Nachrüstung eines gedämpften Spornrades Installation of a cushioned tail wheel X X 1-Jun-1993 Alle Werk-Nr. All S/N Print Date: 15.04.2026 List of SB_SL_Pubs_817, List of SB # GROB AIRCRAFT + HELSING + CONTRACTORS page 3 of 6 List of Service Bulletins Type: G 109 Ref. TCDS No.: EASA.A.249 (LBA 817) Plot Filter: approved List State: 10-Apr-2026 SB No. / Issue Title Alert Mandatory Recommended Optional G 109 G109B Issue date Associated Change Note Remarks Affected Models Category 817-32 Überprüfung der Abgasanlage Inspection of the exhaust system X X 18-Sep-1992 Alle Werk-Nr. All S/N LTA / AD 92-359 817-34/2 Überprüfung der BENDIX-Zündmagneten am Flugmotor GROB G2500 Inspection of the BENDIX-magnetos on the GROB G2500 engine X 17-Mar-1992 Alle Werk-Nr. ab 6200 All S/N from 6200 LTA / AD 92-189 817-35 Überprüfung der Entwässerungsbohrungen im Höhenruder (mit Trimmruder) Inspection of the drain holes in the elevator (including trim tab) X 20-Jul-1992 Alle Werk-Nr. ab 6200 All S/N from 6200 LTA / AD 92-350 817-36 Überprüfung der Bremsklappenanschläge Inspection of the airbrake stops X X 14-Sep-1992 Alle Werk-Nr. All S/N LTA / AD 92-356 817-38/2 Verbesserung des Schwingungsverhaltens der GROB G109 Improvement of the flutter behaviour of the GROB G109 X 31-Mar-1995 Alle Werk-Nr. 6001 - 6159 All S/N 6001 - 6159 LTA / AD 262/2 817-39 Überprüfung der Hauptfahrwerksfederbeine Inspection of the main undercarriage legs X X 4-Jan-1994 Alle Werk-Nr. All S/N LTA / AD 94-004/2 817-42 Verwendung des Flugmotors ROTAX 912 A3 in Verbindung mit dem Propeller HOFFMANN HO-V 352F-S170FQ Installation of the engine ROTAX 912A3 in combination with propeller HOFFMANN HO-V 352F-S170FQ X 8-Aug-1997 Alle Werk-Nr. All S/N German Language only 817-43 Veröffentlicht durch/ Published by Fa. Korff 817-44 Veröffentlicht durch/ Published by Fa. Korff 817-45 Inspektion des Motorträgers auf Scheuerstellen Inspection of the engine mounting frame for abrasion X 27-Jul-1995 Alle Werk-Nr. All S/N LTA / AD 95-362 817-46/2 Verwendung von bleifreiem Benzin Use of unleaded fuel X 6-May-1999 Alle Werk-Nr. All S/N 817-47 Mode- S Transponder Mode - S Transponder X X 19-Sep-2005 Print Date: 15.04.2026 List of SB_SL_Pubs_817, List of SB # GROB AIRCRAFT + HELSING + CONTRACTORS page 4 of 6 List of Service Bulletins Type: G 109 Ref. TCDS No.: EASA.A.249 (LBA 817) Plot Filter: approved List State: 10-Apr-2026 SB No. / Issue Title Alert Mandatory Recommended Optional G 109 G109B Issue date Associated Change Note Remarks Affected Models Category 817-48 Spornradeinbau Tail wheel installation X X 13-Jul-2006 817-49 G-Schalter G-Switch X 6-Apr-2006 Only military use 817-50 Elektrische Versorgung (Relais 6ED) DC- Generation (Relay 6ED) X 14-Nov-2006 817-52/1 Mute Switch Mute Switch X 7-Feb-2011 Only military use 817-53 Inspektion des rechten Steuerknüppels Inspection of the R/H control stick X X 2-Jul-2007 817-54 Alternativer Bremszylinder Alternative brake cylinder X 27-May-2008 MSB817-55/8 Information über Revisionsstand von Flughandbuch und Wartungshandbuch Information about revision status of Flight Manual and Maintenance Manual X X 817-56 reserviert Fa. Korff 817-57 reserviert Fa. Korff MSB817-58/1 Überprüfung des SLW Nasenbleches auf Korrosion, zusätzliche Information Inspection of the Vertical Stabilizer nose plate for corrosion, additional information X X X 17-Feb-2015 MSB817-59 Querruder-Restmomente Aileron Residual Moments X X 06.12 2011 MÄM817-023 MSB817-60 Einbau eines Zugangsdeckels im SLW Installation of an access panel in the vertical stabilizer X X X 9-Dec-2011 MÄM817-026 OSB817-61 Alternativer Umschalter Alternative Toggle switch X X X 13-Oct-2011 MÄM817-025 MSB817-62 Rücknahme der TM817-7 und TM817-13 Withdrawal of TM817-7 and TM817-13 X X X 26-Jan-2012 MSB817-63 Inspektion der Seitenruderpedale Inspection of Rudder Pedal X X X 16-May-2012 Print Date: 15.04.2026 List of SB_SL_Pubs_817, List of SB # GROB AIRCRAFT + HELSING + CONTRACTORS page 5 of 6 List of Service Bulletins Type: G 109 Ref. TCDS No.: EASA.A.249 (LBA 817) Plot Filter: approved List State: 10-Apr-2026 SB No. / Issue Title Alert Mandatory Recommended Optional G 109 G109B Issue date Associated Change Note Remarks Affected Models Category MSB817-64/2 Inspektion der Höhenruderstange Inspection of the elevator rod X X X 6-Sep-2012 MSB817-65 Inspection of Seat harness X X 7-Aug-2012 Only military use OSB817-66 Einbausatz für Power FLARM Installation provisions for Power FLARM X X 3-Apr-2014 OÄM817-039 OSB817-67 Optionale Umrüstung auf LED Lichter Optional Retrofit of LED Lights X X 11-Jul-2014 OÄM817-038 MSB817-69 Neue Limits für Trim Tab new limits for trim tab X X 22-Apr-2016 MÄM817-047 MSB817-70 Inspektion des Spornbockes Inspection of tail mounting bracket X X X 21-Jul-2016 MCN 817-49 OSB817-71 Rotax 912iSc X X 30-Sep-2021 OÄM 817-030 OSB817-72 Garmin G3X Touch Installation X X 10-Apr-2026 OCN 817-054 ASB817-73 Modification of engine mount attachment X X 3-Jun-2022 - S/N 6221, 6525, 6552 OSB817-74 Alternative Undercarriage Leg X 3-Jul-2023 All up to S/N 6500 RSB817-75 Modified Throttle Cable X X 11-Jul-2023 MCN 817-077 all S/N equipped with Rotax Engine 912iSc3 MSB817-76 Special Inspection and Replacement of Fuel Shut-off Valve X X X 3-Nov-2025 MCN 817-087 S/N all RSB817-77 Modified oil cooler bracket X X 5-Jun-2024 MCN 817-089 only with Rotax OCN 817-030 Print Date: 15.04.2026 List of SB_SL_Pubs_817, List of SB # GROB AIRCRAFT + HELSING + CONTRACTORS page 6 of 6

All GROB G-109 service bulletins