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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesRepair of Machinery & Electronic DevicesAltenrheinHistoric Flight Maintenance HFM GmbH
Historic Flight Maintenance HFM GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Historic Flight Maintenance GmbH is the maintenance and upkeep of historic ex-military aircraft as well as modern aircraft such as Diamond or Tecnam. This includes in particular: Periodic inspections (50h, 100h, Annual Inspection), repair work, painting, avionics work, modifications and upgrades, and annual inspections of LTA's and SB's. The company specializes in the maintenance of aircraft such as Cessna, Piper, Cirrus, Tecnam, Diamond, Pilatus P3, Pilatus PC-7, Boeing Stearman and other historic aircraft.

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Products & services

Industry:Repair of Machinery & Electronic Devices
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4.1/5

Historic Flight Maintenance HFM GmbH

4
Aircraft maintenance and servicing
Maintenance work, periodic inspections, repairs, painting and avionics work for historic, military and modern aircraft up to 2430 kg.
Continuing airworthiness management (CAMO)
Creation and management of maintenance programmes, status lists and technical records, plus coordination of maintenance, repair and modification work.
Modifications and upgrades
Modifications and upgrades to keep historic and ex-military aircraft safely airworthy under current standards and requirements.
Annual inspections and airworthiness reviews
Annual inspections, LTA and SB work, plus support with pre-purchase inspections and recommendations from experienced aviation technicians.
Trust & reputation

ranQ Trust Score of Historic Flight Maintenance HFM GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Historic Flight Maintenance HFM 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.
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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%
Historic Flight Maintenance HFM GmbH scores 83.0 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.100.012%
  • 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%
Historic Flight Maintenance HFM GmbH scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
Historic Flight Maintenance HFM GmbH scores 4.3 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 35.4.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Historic Flight Maintenance HFM 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.

Knowledge

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Location

Flughafenstrasse 11
9423 Altenrhein
Opening hours
Mon
08:00 - 12:00, 13:00 - 16:30
Tue
08:00 - 12:00, 13:00 - 16:30
Wed
08:00 - 12:00, 13:00 - 16:30
Thu
08:00 - 12:00, 13:00 - 16:30
Fri
08:00 - 12:00, 13:00 - 16:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-115.776.788
Founded
2010 · 16 years
Last commercial register change
August 25, 2025
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.88.06%
  • 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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