AOI REVISION SAFETY DIRECTIVE ALL-SA-0-0-0-0001-2020
BRM AERO Bristell NG-5 · Service Bulletins
Overview
This document is a safety directive bulletin for the BRM Aero Bristell NG-5 aircraft, specifically addressing revisions to the Aircraft Operating Instructions (AOI). It outlines corrections to weight and balance calculations and updates to the longitudinal datum for improved accuracy.
- The bulletin is classified as a safety directive.
- It affects all variants of the Bristell NG-5 aircraft.
- The pilot and passenger arm measurements have been corrected.
- The longitudinal datum has been changed to the firewall.
- Compliance with the bulletin is required immediately for weight and balance calculations.
- Revised AOI pages will be provided free of charge.
- The actual aircraft weight and balance data remains unchanged.
- The document includes a new weight and balance scheme.
Document
Source
Originally published by bristell.com. Sprinkle hosts a reference copy with an added summary, specifications and searchable full text.
Document details
- Type ·
- Service Bulletins
- Year ·
- 2020
- File size ·
- 1.1 MB
- Publisher ·
- bristell.com
- Language ·
- en
Specifications & performance
Extracted from this document.
Specifications
- Mac (in) ·
- 54.114 in
- Mac mm ·
- 1374.5 mm
- Mtow kg ·
- 600 kg
- Mtow (lb) ·
- 1320 lb
- Mac le (in) ·
- 15.988 in
- Mac le mm ·
- 406.1 mm
- Wing span m ·
- 8.13 m
- Wing span (ft) ·
- 26.7 ft
Performance
- C g range ·
- 25 to 35 %MAC
- C g aft limit mm ·
- 887 mm
- C g front limit mm ·
- 750 mm
Weight & balance
- Mtow limit lsa kg ·
- 600 kg
- Mtow limit ul no parachute kg ·
- 450 kg
- Mtow limit ul with parachute kg ·
- 472.5 kg
What is the AOI REVISION SAFETY DIRECTIVE ALL-SA-0-0-0-0001-2020?
The AOI REVISION SAFETY DIRECTIVE ALL-SA-0-0-0-0001-2020 is a service bulletins for the BRM AERO Bristell NG-5, dated 2020.
Where does the AOI REVISION SAFETY DIRECTIVE ALL-SA-0-0-0-0001-2020 come from?
This copy of the AOI REVISION SAFETY DIRECTIVE ALL-SA-0-0-0-0001-2020 was originally published by bristell.com and is hosted on Sprinkle as a free, searchable reference copy.
What year was the AOI REVISION SAFETY DIRECTIVE ALL-SA-0-0-0-0001-2020 published?
The AOI REVISION SAFETY DIRECTIVE ALL-SA-0-0-0-0001-2020 — the BRM AERO Bristell NG-5 service bulletins on file — is dated 2020.
Most owners only have the POH. Here's the essential set for the BRM AERO Bristell NG-5.
- Pilot's Operating Handbook / AFM
- Checklist
- Maintenance Manual
- Parts Catalog (IPC)
- Systems & Wiring
- Service Bulletins on file
- Type Certificate (TCDS)
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In this document
General Information
This section details the affected aircraft types, the reason for the alert, and the compliance requirements.
Documents
This section lists the documents that are superseded and revised by this safety alert.
Accomplishment Instructions
Instructions for updating the AOI, including the removal of old pages and insertion of new ones.
Bulletin Approval
This section provides information on the individuals who elaborated and approved the bulletin.
Material Information
This section states that no specific materials or tools are required for compliance.
Weight and Balance Scheme
Annex 1 provides the new weight and balance scheme with revised arms to the new datum.
Safety notes
- Immediate compliance is required for weight and balance calculations.
- The revised pilot arm is set 150 mm further aft than previously published.
- Measurement of individual aircraft wheel arms is necessary for accurate W&B analysis.
- The bulletin must be recorded in the Aeroplane Log Book.
Full document text
BULLETIN TITLE: AOI REVISION CLASSIFICATION: SAFETY DIRECTIVE Letecká 255 Tel.:+420 773 984 338 BULLETIN NUMBER: ALL-SA-0-0-0-0001-2020 686 04 Kunovice info@brmaero.com Date of issue: 07.08.2020 Revision no.: R2 Page: 1 Czech Republic www.brmaero.com Date of effect: 07.08.2020 Date of rev.: 07.12.2022 Pages: 6 Form no: BRM-FORM-BUL-001 Form date of issue: 11.11.2015 Rev.: - Rev.date of issue: File name: BRM Safety Alert 001_2020_R2 © BRM Aero s.r.o. 0 RECORD OF REVISIONS Rev.No. Affected pages Reason Date R1 All Bulletin re-classification to Safety Directive acc.to ASTM F3198-18 on FAA request. 04.09.2020 R2 All MAC origin distance correction 07.12.2022 1 GENERAL INFORMATION 1.1 Affected aircraft 1.1.1 Type: BRISTELL 1.1.2 Model: NG-5 – all variants 1.1.3 S/N: All serial numbers 1.1.4 Countries: All countries where the aircraft are operated. 1.2 Reason This alert was made to require correction of an error in the AOI and to simplify the W&B calculations required of the pilot. 1.3 Explanation It was recently discovered that the pilot and passenger arm as currently shown in Section 6 of the Aircraft Operating Instructions (AOI) was incorrect. This Safety Alert has been issued to correct this error. This opportunity has also been taken to change the longitudinal datum from the leading edge of the MAC to the firewall, this being a more readily identifiable location, and one that can be measured from. As a result of this change the arms and moments shown in this AOI revision will appear to be significantly different to the previous version, nevertheless the resulting CG calculations using the updated data will be correct. A revision in Section 2 reflects the changes relating to the datum change. The revised pilot and passenger arm incorporated in this revision was determined by weighing a sample aircraft with differing weights and sizes of the occupants. The revised pilot arm has been conservatively set 150 mm further aft than was previously published. The revised Section 6 reflects this change. 1.4 Compliance time Immediatelly start to use for W&B calculation data provided in Annex 1. AOI revised pages for individual aircraft will be provided by BRM Aero subsequently as soon as possible. Contact BRM local representative or BRM Aero in case of any questions about your aircraft CG. 1.5 Mass data The actual aircraft weight and balance data is not changed by compliance with this Safety Notice, only the Aircraft Operating Instructions relating to weight and balance are changed. 2 DOCUMENTS 2.1 Superseded documents AOI pages replaced by this Safety Alert. 2.2 Revised documents AOI – One page Section 2 and the whole of Section 6. 2.3 Affected documents Aircraft Operating Instructions (AOI). BULLETIN TITLE: AOI REVISION CLASSIFICATION: SAFETY DIRECTIVE Letecká 255 Tel.:+420 773 984 338 BULLETIN NUMBER: ALL-SA-0-0-0-0001-2020 686 04 Kunovice info@brmaero.com Date of issue: 07.08.2020 Revision no.: R2 Page: 2 Czech Republic www.brmaero.com Date of effect: 07.08.2020 Date of rev.: 07.12.2022 Pages: 6 Form no: BRM-FORM-BUL-001 Form date of issue: 11.11.2015 Rev.: - Rev.date of issue: File name: BRM Safety Alert 001_2020_R2 © BRM Aero s.r.o. 3 MATERIAL INFORMATION 3.1 Required material Nil 3.2 Required tools Nil 3.3 Costs covered by The amended AOI pages (in electronic format) will be provided free of charge by BRM Aero. 4 ACCOMPLISHMENT INSTRUCTIONS 4.1 Type of maintenance Documentation amendment. 4.2 Authorization to perform Owner / pilot. 4.3 Manpower 15 minutes. 4.4 Work procedure 1. Immediately start to use for WB calculation data provided in Annex 1. 2. After obtaining revised AOI pages: 3. Remove the superseded pages from the AOI, this includes the entire Section 6. 4. Print replacement pages. 5. Insert the replacement pages in the AOI. 4.5 Work inspection Not required. 4.6 Bulletin compliance record Update the Record of revisions and the List of effective pages in Section 0 of the AOI. Record bulletin compliance in your Aeroplane Log Book. 5 BULLETIN APPROVAL 5.1 Elaborated by: Petr Javorský, BRM Aero, Certification manager 5.2 Date of elaboration: 07.08.2020, 07.12.2022 Rev.2 5.3 Approved by: Milan Bříštěla, BRM Aero, CEO 5.4 Date of approval: 07.08.2020, 07.12.2022 Rev.2 BULLETIN TITLE: AOI REVISION CLASSIFICATION: SAFETY DIRECTIVE Letecká 255 Tel.:+420 773 984 338 BULLETIN NUMBER: ALL-SA-0-0-0-0001-2020 686 04 Kunovice info@brmaero.com Date of issue: 07.08.2020 Revision no.: R2 Page: 3 Czech Republic www.brmaero.com Date of effect: 07.08.2020 Date of rev.: 07.12.2022 Pages: 6 Form no: BRM-FORM-BUL-001 Form date of issue: 11.11.2015 Rev.: - Rev.date of issue: File name: BRM Safety Alert 001_2020_R2 © BRM Aero s.r.o. Annex 1 New WB scheme, revised arms to the new Datum (firewall) A/ BRISTELL „CLASSIC“ (fixed tricycle landing gear) B/ BRISTELL „RG“ (retractable tricycle landing gear) C/ BRISTELL „TDO“ (tail wheel landing gear) BULLETIN TITLE: AOI REVISION CLASSIFICATION: SAFETY DIRECTIVE Letecká 255 Tel.:+420 773 984 338 BULLETIN NUMBER: ALL-SA-0-0-0-0001-2020 686 04 Kunovice info@brmaero.com Date of issue: 07.08.2020 Revision no.: R2 Page: 4 Czech Republic www.brmaero.com Date of effect: 07.08.2020 Date of rev.: 07.12.2022 Pages: 6 Form no: BRM-FORM-BUL-001 Form date of issue: 11.11.2015 Rev.: - Rev.date of issue: File name: BRM Safety Alert 001_2020_R2 © BRM Aero s.r.o. A/ BRISTELL „CLASSIC“ (fixed tricycle landing gear) Dimension specification Short wing version Long wing version Metric units US units Metric units US units Wing span 8.13 m 26.7 ft 9.13 m 29.9 ft MAC 1374.5 mm 54.114 in 1349.7 mm 53.138 in MAC_LE 406.1 mm 399.4 mm 15.988 in 15.724 in 412.6 mm 406.1 mm 16.244 in 15.989 in LN – nose wheel arm -369 mm -14.54 in -369 mm -14.54 in LL, LR – main wheel arms 1108 mm 43.61 in 1108 mm 43.61 in Pilot arm 1156 mm 45.51 in 1156 mm 45.51 in Passenger arm 1156 mm 45.51 in 1156 mm 45.51 in Fuel arm 606 mm 23.86 in 606 mm 23.86 in Baggage behind seats arm 1806 mm 71.10 in 1806 mm 71.10 in
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Baggage in wing lockers (optional) arm 1036 mm 40.79 in 1036 mm 40.79 in Baggage in front locker (optional) arm 106 mm 4.17 in 106 mm 4.17 in Permitted C.G. range 25 to 35 %MAC (34 %MAC in Germany) C.G. Front limit in % of MAC 25 % MAC C.G. Front limit behind Datum 750 mm 743 mm 29.5 in 29.25 in 750 mm 744 mm 29.5 in 29.27 in C.G. Aft limit 35 % MAC 34 % MAC Germany C.G. Aft limit behind Datum 887 mm 880 mm 34.9 in 34.66 in 885 mm 879 mm 34.8 in 34.59 in Germany: 867 mm 34.12 in 865 mm 34.06 in MTOW limit for LSA category 600 kg 1320 lb 600 kg 1320 lb MTOW limit for UL category without a parachute rescue system 450 kg 992 lb 450 kg 992 lb MTOW limit for UL category with a parachute rescue system (depends on particular country rules) 472.5 kg 1042 lb 472.5 kg 1042 lb 𝐶. 𝐺. (𝑚𝑚 𝑜𝑟 𝑖𝑛) = 𝑇𝑂𝑇𝐴𝐿 𝑀𝑂𝑀𝐸𝑁𝑇 (𝑘𝑔. 𝑚𝑚 𝑜𝑟 𝑙𝑏. 𝑖𝑛) 𝑇𝑂𝑇𝐴𝐿 𝑊𝐸𝐼𝐺𝐻𝑇 (𝑘𝑔 𝑜𝑟 𝑙𝑏) 𝐶. 𝐺. (%𝑀𝐴𝐶) = 𝐶. 𝐺. (𝑚𝑚 𝑜𝑟 𝑖𝑛) − 𝑀𝐴𝐶_𝐿𝐸(𝑚𝑚 𝑜𝑟 𝑖𝑛) 𝑀𝐴𝐶 (𝑚𝑚 𝑜𝑟 𝑖𝑛) × 100 BULLETIN TITLE: AOI REVISION CLASSIFICATION: SAFETY DIRECTIVE Letecká 255 Tel.:+420 773 984 338 BULLETIN NUMBER: ALL-SA-0-0-0-0001-2020 686 04 Kunovice info@brmaero.com Date of issue: 07.08.2020 Revision no.: R2 Page: 5 Czech Republic www.brmaero.com Date of effect: 07.08.2020 Date of rev.: 07.12.2022 Pages: 6 Form no: BRM-FORM-BUL-001 Form date of issue: 11.11.2015 Rev.: - Rev.date of issue: File name: BRM Safety Alert 001_2020_R2 © BRM Aero s.r.o. B/ BRISTELL „RG“ (retractable tricycle landing gear) Dimension specification Short wing version Long wing version Metric units US units Metric units US units Wing span 8.13 m 26.7 ft 9.13 m 29.9 ft MAC 1374.5 mm 54.114 in 1349.7 mm 53.138 in MAC_LE 406.1 mm 399.4 mm 15.988 in 15.724 in 412.6 mm 406.1 mm 16.244 in 15.989 in LN – nose wheel arm Measure arm on your aircraft acc.to BRISTELL RG new WB scheme.1) LL, LR – main wheel arms Measure arm on your aircraft acc.to BRISTELL RG new WB scheme.1) Pilot arm 1156 mm 45.51 in 1156 mm 45.51 in Passenger arm 1156 mm 45.51 in 1156 mm 45.51 in Fuel arm 606 mm 23.86 in 606 mm 23.86 in Baggage behind seats arm 1806 mm 71.10 in 1806 mm 71.10 in Baggage in wing lockers (optional) arm 1036 mm 40.79 in 1036 mm 40.79 in Baggage in front locker (optional) arm 106 mm 4.17 in 106 mm 4.17 in Permitted C.G. range 25 to 35 %MAC (25 to 34% Germany, 25 to 32% Israel) C.G. Front limit in % of MAC 25 % MAC C.G. Front limit behind Datum 750 mm 743 mm 29.5 in 29.25 in 750 mm 744 mm 29.5 in 29.27 in C.G. Aft limit 35 % MAC 34 % MAC Germany 32 % MAC Israel (long wing ver.) C.G. Aft limit behind Datum 887 mm 880 mm 34.9 in 34.66 in 885 mm 879 mm 34.8 in 34.59 in Germany: 867 mm 34.12 in 865 mm 34.06 in Israel (long wing version): 839 mm 33.04 in 838 mm 32.99 in MTOW limit for LSA category 600 kg 1320 lb 600 kg 1320 lb MTOW limit for UL category without a parachute rescue system 450 kg 992 lb 450 kg 992 lb MTOW limit for UL category with a parachute rescue system (depends on particular country rules) 472.5 kg 1042 lb 472.5 kg 1042 lb 1) There are more designs of BRISTELL RG landing gear, so measurement of individual aeroplane wheel arms to the firewall will ensure use of correct arms for the W&B analysis. 𝐶. 𝐺. (𝑚𝑚 𝑜𝑟 𝑖𝑛) = 𝑇𝑂𝑇𝐴𝐿 𝑀𝑂𝑀𝐸𝑁𝑇 (𝑘𝑔. 𝑚𝑚 𝑜𝑟 𝑙𝑏. 𝑖𝑛) 𝑇𝑂𝑇𝐴𝐿 𝑊𝐸𝐼𝐺𝐻𝑇 (𝑘𝑔 𝑜𝑟 𝑙𝑏) 𝐶. 𝐺. (%𝑀𝐴𝐶) = 𝐶. 𝐺. (𝑚𝑚 𝑜𝑟 𝑖𝑛) − 𝑀𝐴𝐶_𝐿𝐸(𝑚𝑚 𝑜𝑟 𝑖𝑛) 𝑀𝐴𝐶 (𝑚𝑚 𝑜𝑟 𝑖𝑛) × 100 BULLETIN TITLE: AOI REVISION CLASSIFICATION: SAFETY DIRECTIVE Letecká 255 Tel.:+420 773 984 338 BULLETIN NUMBER: ALL-SA-0-0-0-0001-2020 686 04 Kunovice info@brmaero.com Date of issue: 07.08.2020 Revision no.: R2 Page: 6 Czech Republic www.brmaero.com Date of effect: 07.08.2020 Date of rev.: 07.12.2022 Pages: 6 Form no: BRM-FORM-BUL-001 Form date of issue: 11.11.2015 Rev.: - Rev.date of issue: File name: BRM Safety Alert 001_2020_R2 © BRM Aero s.r.o. C/ BRISTELL „TDO“ (tail wheel landing gear) Dimension specification Short wing version Long wing version Metric units US units Metric units US units Wing span 8.13 m 26.7 ft 9.13 m 29.9 ft MAC 1374.5 mm 54.114 in 1349.7 mm 53.138 in MAC_LE 406.1 mm 399.4 mm 15.988 in 15.724 in 412.6 mm 406.1 mm 16.244 in 15.989 in LT – tail wheel arm Measure arm on your aircraft acc.to BRISTELL TDO new WB scheme.1) LL, LR – main wheel arms Measure arm on your aircraft acc.to BRISTELL TDO new WB scheme.1) Pilot arm 1156 mm 45.51 in 1156 mm 45.51 in Passenger arm 1156 mm 45.51 in 1156 mm 45.51 in Fuel arm 606 mm 23.86 in 606 mm 23.86 in Baggage behind seats arm 1806 mm 71.10 in 1806 mm 71.10 in Baggage in wing lockers (optional) arm 1036 mm 40.79 in 1036 mm 40.79 in Baggage in front locker (optional) arm 106 mm 4.17 in 106 mm 4.17 in Permitted C.G. range 25 to 35 %MAC C.G. Front limit in % of MAC 25 % MAC C.G. Front limit behind Datum 750 mm 743 mm 29.5 in 29.25 in 750 mm 744 mm 29.5 in 29.27 in C.G. Aft limit 35 % MAC C.G. Aft limit behind Datum 887 mm 880 mm 34.9 in 34.66 in 885 mm 879 mm 34.8 in 34.59 in MTOW limit for LSA category 600 kg 1320 lb 600 kg 1320 lb MTOW limit for UL category without a parachute rescue system 450 kg 992 lb 450 kg 992 lb MTOW limit for UL category with a parachute rescue system (depends on particular country rules) 472.5 kg 1042 lb 472.5 kg 1042 lb 1) There are several designs of BRISTELL TDO landing gear (Alaskan, fibreglass legs), so measurement of individual aeroplane wheel arms to the firewall will ensure use of correct arms for the W&B analysis. 𝐶. 𝐺. (𝑚𝑚 𝑜𝑟 𝑖𝑛) = 𝑇𝑂𝑇𝐴𝐿 𝑀𝑂𝑀𝐸𝑁𝑇 (𝑘𝑔. 𝑚𝑚 𝑜𝑟 𝑙𝑏. 𝑖𝑛) 𝑇𝑂𝑇𝐴𝐿 𝑊𝐸𝐼𝐺𝐻𝑇 (𝑘𝑔 𝑜𝑟 𝑙𝑏) 𝐶. 𝐺. (%𝑀𝐴𝐶) = 𝐶. 𝐺. (𝑚𝑚 𝑜𝑟 𝑖𝑛) − 𝑀𝐴𝐶_𝐿𝐸(𝑚𝑚 𝑜𝑟 𝑖𝑛) 𝑀𝐴𝐶 (𝑚𝑚 𝑜𝑟 𝑖𝑛) × 100