DH.87 Hornet Moth
Enable an AI agent to recognise the DH.87 Hornet Moth aircraft type, distinguish its configurations, and identify the evidence needed to assess a particular example for preservation, maintenance or operation.
Bundle → Layer → Finding → Questions Filled
6 bundles · 11 layers · 18 findings · 28 questions
Identity and configuration Resolve DH.87 membership and the distinction between original identity and current configuration.
Type recognition
Connect observed features to documentary identification.
DH.87 identity evidence
Require a traceable basis for attributing an example to this registered type.
- Which identification plate, construction record or authoritative register establishes this example as a DH.87? provenance
- Do its cabin and wing arrangement support that identification, or suggest a different Moth type? boundary
Variant and conversion
Record original designation and later configuration changes independently.
Wing conversion traceability
Treat wing configuration as an evidenced attribute rather than an inference from registration or build date.
- Was this aircraft built as a DH.87A or DH.87B, and which wings are fitted now? definition
- What conversion, repair or replacement records connect the installed wings to the aircraft's present designation? provenance
Wings, folding and handling Connect wing geometry and folding condition to handling and storage decisions.
Planform-dependent envelope
Associate handling claims with the wing configuration to which they apply.
Stall behaviour applicability
The museum associates the original pointed wings with tip-first stalling and the subsequent wing redesign; operational assessment needs applicable flight documentation. [Museum wing history](https://www.dehavillandmuseum.co.uk/aircraft/de-havilland-dh87b-hornet-moth/)
- Which documented stall characteristics and limitations apply to the installed wings? provenance
- Under what mass, centre-of-gravity and test conditions were the cited stall speeds established? measurement
Folding and rigging
Assess the transition between storage and flight configurations.
Folding security evidence
Record the applicable folding instructions and evidence that affected attachments and controls have been checked.
- Which instructions identify the folding sequence, securing points and required checks for this configuration? provenance
- What inspection and control checks are required before this folded or recently unfolded example may be moved or operated? action
Cabin, loading and fuel Assess how occupants, baggage and fuel affect the aircraft's usable configuration.
Occupants and baggage
Connect cabin use to the aircraft's documented weight and balance.
Configuration-specific loading
Use the example's weighing record and loading instructions to assess occupancy and baggage proposals.
- What empty mass, datum and centre-of-gravity record reflects the current restoration and equipment? measurement
- Does the proposed occupant, baggage and fuel combination remain within its documented loading envelope? action
Fuel storage and delivery
Resolve the fitted tank and fuel-feed arrangement.
Fuel system applicability
The museum describes a tank behind the seats beneath the baggage space and engine-driven fuel pumps; verify the actual installation. [Museum fuel-system description](https://www.dehavillandmuseum.co.uk/aircraft/de-havilland-dh87b-hornet-moth/)
- What tank capacity, unusable fuel and pump arrangement are documented for this example? measurement
- Which fuel specification and inspection instructions apply to the installed engine and fuel system? provenance
Propulsion and control equipment Identify installed equipment and establish which instructions govern its use.
Engine, propeller and starting
Connect propulsion identity to starting provisions, consumables and limits.
Installed propulsion evidence
Keep engine, propeller and starting-system identification linked to installation and maintenance records.
- Which engine, propeller and starting arrangement are fitted, and what records establish their accepted installation? provenance
- Which operating limits, lubricant requirements and maintenance instructions apply to that combination? action
Landing and drag controls
Assess the relationship between cockpit controls and fitted ground-handling or drag equipment.
Brake and fairing control state
Require evidence of installed control arrangements and functional checks, including any modification or deactivation.
- How are wheel brakes, tailwheel and rotating fairing airbrakes configured and controlled on this example? definition
- What documented checks establish their condition and any resulting operating restrictions? action
Continued integrity and use Connect restoration and inspection evidence to a proposed activity.
Structure and restoration
Trace structural condition and repairs against the intended DH.87 configuration.
Structural evidence gaps
Identify inspection needs for wing attachments, folding components and other structural details from applicable drawings and maintenance instructions.
- Which drawings and inspection instructions establish the materials, joints and deterioration mechanisms relevant to this airframe? provenance
- Which repairs, replacement wings or concealed areas lack sufficient evidence for the proposed use? boundary
Activity eligibility
Assess documentary and physical readiness for display, ground operation or flight.
Permitted use evidence
Require the applicable authority, technical basis and current condition evidence before assigning operational eligibility.
- Which jurisdiction, issuing authority and aircraft-specific certificate or permit govern the proposed activity? provenance
- What unresolved inspection, maintenance or configuration issues prevent this example from meeting those conditions? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these check these first hold for the sense of DH.87 Hornet Moth this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these kinds and varieties hold for the sense of DH.87 Hornet Moth this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these identifiers and schemes hold for the sense of DH.87 Hornet Moth this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these real-world use hold for the sense of DH.87 Hornet Moth this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these typical measurements hold for the sense of DH.87 Hornet Moth this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these failure modes and hazards hold for the sense of DH.87 Hornet Moth this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these regional variation hold for the sense of DH.87 Hornet Moth this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of DH.87 Hornet Moth this model covers, and on what evidence? provenance
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.OBJ
- Other names and narrower kinds
- DH.87B Hornet Moth
What it is Filled
The de Havilland DH.87 Hornet Moth is a British single-engine, two-seat cabin biplane developed in the 1930s for private flying and touring, with side-by-side seating and a fixed tailwheel undercarriage.
In scope
- DH.87 type identity, variant identification and documented A-to-B conversions
- Wing configuration, folding arrangements and configuration-dependent handling
- Cabin layout, loading and installed propulsion interfaces
- Type-specific inspection, restoration and equipment assessment
- Evidence connecting an example's configuration and condition to permitted activities
Out of scope
- The broader de Havilland Moth aircraft family
- Tiger Moth, Puss Moth and DH.103 Hornet type models
- The Gipsy Major engine's standalone design and overhaul model
- Individual aircraft ownership histories and maintenance logs as independent records
- Pilot licensing, aerodrome operations and flight planning as separate activity models
Why it exists Filled
Enable an AI agent to recognise the DH.87 Hornet Moth aircraft type, distinguish its configurations, and identify the evidence needed to assess a particular example for preservation, maintenance or operation.
Distinguishing features Filled
- Match manufacturer and DH.87 designation against identification records; the word Hornet alone is insufficient.
- Check for a single-engine biplane with an enclosed, side-by-side cabin, distinguishing it from the open-cockpit Tiger Moth. [Museum aircraft overview](https://www.dehavillandmuseum.co.uk/aircraft/de-havilland-dh87b-hornet-moth/)
- Distinguish tapered, pointed DH.87A wings from the near-rectangular B configuration; record conversions separately from original build identity. [Museum configuration history](https://www.dehavillandmuseum.co.uk/aircraft/de-havilland-dh87b-hornet-moth/)
- Use folding wings and rotating undercarriage-leg fairings acting as airbrakes as supporting recognition features, subject to the example's installed configuration. [Museum design description](https://www.dehavillandmuseum.co.uk/aircraft/de-havilland-dh87b-hornet-moth/)
What robots and AI may and may not do Filled
Must not
- Fly or move an aircraft without the owner's authority and a valid airworthiness certificate.
- Return an aircraft to service after maintenance without a qualified sign-off.
- Misrepresent an aircraft's history, originality or airworthiness in a sale.
- Approach or touch a running propeller or let others do so.
Only with a human decision
- Certifying the aircraft as airworthy or approving modifications.
May
- Describe the Hornet Moth, its history and surviving examples from reliable sources.
- Report an aircraft's registration and airworthiness status from the official register.
- Support preservation and museum records of the type.
Moral aspects Filled
- Vintage aircraft carry pilots and passengers with older safety standards.
- Surviving examples are aviation heritage.
Who is affected
- Pilots and passengers
- People on the ground
- Restorers and owners
Owners Filled
Steward
The registered owner or operator; the civil aviation authority keeps the aircraft register.
Master systems
- National civil aircraft register
Links to other meta-models Filled
parent
- Q67488053 - registry parent class
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.dh-87-hornet-moth
- Wikidata: Q1050504 (https://www.wikidata.org/wiki/Q1050504)
Direct properties required Filled
- Build identity and present variant: Manufacturer identity, construction number, original designation, current configuration and conversion evidence
- Wing planform: A-type tapered; B-type near-rectangular; modified; unverified
- Wing folding readiness: Flight-position security verified; folded and secured; transition; inspection required; unknown
- Wingspan: m; museum DH.87B reference: 9.73 m
- Installed engine and propeller: Engine model and serial, propeller identification, installation approval and applicable limits
- Loaded mass and centre of gravity: kg and mm from the documented datum; configuration-specific permitted envelope
- Fuel capacity and usable quantity: L; total, usable and measured remaining quantities distinguished
- Landing and drag-control equipment: Installed configuration and inspection state of wheel brakes, tailwheel and fairing airbrakes
- Flight-envelope evidence: Applicable manual revision, wing configuration, speed units, loading conditions and restrictions
- Preservation and operating status: Static exhibit; restoration; ground-operation candidate; flight-operation candidate; unresolved
Recognition required Filled
- A small biplane with a fully enclosed cabin and side-by-side seats.
- Fabric-covered wings with a fixed tailwheel undercarriage.
Capabilities and actions required Filled
- Classify a documented aircraft as DH.87 and identify unresolved variant evidence.
- Compare original build configuration with present wings, propulsion and equipment.
- Assess folding and storage readiness against applicable instructions and inspection records.
- Check whether loading and performance evidence applies to the installed configuration.
- Prepare a focused inspection or restoration evidence request.
- Determine which maintenance, technical and regulatory evidence is missing before a proposed ground run or flight.
Hazards and failure modes required Filled
- Ageing wooden and fabric structures can deteriorate unseen.
- Tailwheel aircraft can ground-loop on landing.
Standards and interfaces required Filled
- Annex 7 to the Convention on International Civil Aviation, issued by the International Civil Aviation Organization, specifies nationality and registration markings for civil aircraft within its scope.
- The Air Navigation Order 2016, issued by the United Kingdom as an Order in Council, provides requirements relevant to examples operated under United Kingdom jurisdiction.
Context of use required Filled
- This aircraft type was developed for private flying and touring with two occupants seated side by side in an enclosed cabin.
- Surviving examples are encountered in historic aircraft collections, restoration projects and heritage flying.
Sources Filled
- Wikidata item Q1050504: DH.87 Hornet Moth - identity and sense of the item
- Wikipedia: De Havilland Hornet Moth - general description of the item
Open questions
- Which original manuals, drawings and approved supplements authoritatively define DH.87A and DH.87B limitations and conversion requirements?
- What are the verified variant-specific fuel capacities, loading envelopes and performance figures, including units and measurement conditions?
- Which structural deterioration mechanisms, inspection intervals and repair criteria are documented specifically for DH.87 aircraft?
- How did fairing airbrakes, starting equipment and flight instruments vary across production, conversions and later modifications?
- Which current airworthiness requirements and continuing-airworthiness instructions apply in the jurisdiction of a particular surviving example?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q1050504/spec.json