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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesManagement ConsultingLangnau Im EmmentalA4F Services GmbH
A4F Services GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of A4F Services GmbH is the creation and provision of aeronautical charts and services for the aviation industry, particularly in the areas of flight plan design, Aeronautical Information Management (AIM) and aeronautical charts. The company offers specialized services such as the creation of flight plans, the provision of aeronautical charts and support for the implementation of aviation systems.

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Products & services

Industry:Management Consulting
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4.1/5

A4F Services GmbH

✓ Offered7
Aeronautical Charts
Production of procedure charts, ICAO Annex 4 charts and operator-specific charts; created according to customer-specific requirements based on regulated data sources, including migration into automated charting environments.
Procedure Design Charts
Procedure charts for arrival and departure procedures at airports or heliports; produced from Procedure Design Reports to support safety assessment, Flight Inspection, validation and approval.
Pilot Charts
Pilot charts and chart compilations for HEMS, HEL, OPS IFR and VFR; including FLIPS, EFBs and Operations Manual Part C as well as RNP-AR and RNP-0.3 charts.
ICAO Charts
Charts and plans according to ICAO Annex 4 and 15; including consideration of PBN chart identification according to PANS-OPS and ICAO Circular 353.
Aeronautical Charting Training
Training for entry into aeronautical charts production; theory on cartography and data chain, practical chart creation and refresher course.
Development Support
Support for system and product companies in developing cartographic tools and more automated aeronautical charting systems.
Consultancy
Strategic consulting for charting management, subject-matter and technical teams; support with concept development, planning, monitoring and implementation of new international developments such as AIS to AIM.
Trust & reputation

ranQ Trust Score of A4F Services GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

A4F Services GmbH has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
A4F Services GmbH scores 72.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.75.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
A4F Services GmbH scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
A4F Services GmbH scores 57.1 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.57.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

A4F Services GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

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Location

Napfstrasse 62
3550 Langnau Im Emmental

At a glance

Legal form
Limited Liability Company
UID
CHE-381.017.543
Founded
2019 · 7 years
Last commercial register change
December 20, 2019
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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