# WDL WDL 1B

- Type: Aircraft model (FAA registry)
- Registry code: 9700101
- Manufacturer (registry): WDL
- Model: WDL 1B
- Aircraft type: Blimp/Dirigible
- Category: Airship
- Engines: 2 · Reciprocating
- Seats: 7
- Weight class: 12,500 to 19,999 lb
- Certification: Type certificated
- Registered aircraft: 0
- Page: https://openairdocs.org/model/wdl-wdl-1b

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

None matched.

## Registered aircraft

None registered with this model now.

## NTSB investigations (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB NYC94FA176](https://openairdocs.org/ntsb/NYC94FA176), Sep 11, 1994: WDL 1B (N317TW), Farmingdale, NY, substantial damage. Probable cause: INADEQUATE DESIGN OF THE AIRSHIP, WHICH ALLOWED THE CENTER BALLONET TO OVERFILL AND TO COLLAPSE THE TRUNKING TO THE FORE AND AFT BALLONETS, RENDERING THE AIRSHIP UNCONTROLLABLE. FACTORS RELATED TO…

## FAA accident and incident reports (1)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 19940911026099A](https://openairdocs.org/incident/19940911026099A), Sep 11, 1994: Wdl WDL1 (N317TW), Farmingdale, NY, Substantial damage. Lost air pressure on climbout. Tried land on residential street. Center damper valve left open by maintenance.

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