# AD 91-05-03: Bonding Straps

- Type: Airworthiness directive
- Status: Current
- Products: Dornier Luftfahrt Dornier 228-100, Dornier 228-101, Dornier 228-200, Dornier 228-201, Dornier 228-202 and Dornier 228-212
- Effective: March 25, 1991
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small/large airplane
- Amendment: 39-6902
- Docket: 90-CE-49-AD
- Registered aircraft: 11 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/30B25C643DF27CEA86256A22006B217E.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/91-05-03

## The airworthiness directive

91-05-03 DORNIER: Amendment 39-6902. Docket No. 90-CE-49-AD. Applicability: Models Do228-100, Do228-101, Do228-200, Do228-201, Do228-202, and Do228-212 airplanes (serial numbers as indicated in the body of the AD), certificated in any category.

Compliance: Required within the next 300 hours time-in-service after the effective date of this AD, unless already accomplished.

To assure the electrical bonding integrity of the affected airplanes, accomplish the following:

  (a) For serial numbers (S/N) 7000 through 7168 and S/N 8000 through 8190 airplanes, replace the 4 mm2 cross-sectional area bonding straps between the horizontal stabilizer and the elevator with 6 mm2 cross-sectional area bonding straps in accordance with the instructions in Dornier Service Bulletin (SB) No. SB-228-106, Revision 1, dated December 11, 1989.

  (b) For S/N 7000 through 7168, S/N 8000 through 8175, and S/N 8177 airplanes, visually inspect the wing front spar area around electrical connectors 56VP, 57VP, 58VP and 59VP (electrical connectors 23QXa, 24QXa if option IK04 is installed) for corrosion in accordance with the instructions in Dornier SB No. SB-228-152, Revision 1, dated February 19, 1990. If corrosion is found, prior to further flight, remove the corrosion and treat the affected area in accordance with the instructions in Dornier SB No. SB-228-152, "Accomplishment Instruction" paragraph 2.2.

  (c) For S/N 7000 through 7168 and S/N 8000 through 8179 airplanes, install an additional grounding strap between the wing rear spar and the fuselage in accordance with the instructions in Dornier SB No. SB-228-162, dated February 19, 1990.

  (d) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a location where the requirements of this AD can be accomplished.

  (e) An alternate method of compliance or adjustment of the compliance time that provides an equivalent level of safety may be approved by the Manager,Brussels Aircraft Certification Staff, Europe, Africa and Middle East Office, FAA, c/o American Embassy, 1000 Brussels, Belgium. The request should be forwarded through an appropriate FAA Maintenance Inspector, who may add comments and then send it to the Manager, Brussels Aircraft Certification Office.

  (f) All persons affected by this directive may obtain copies of the documents referred to herein upon request to Dornier Luftfahrt GmbH, Product Support, P.O. Box 3, D-8031 Wessling, Federal Republic of Germany; Telephone (498153)-300; Facsimile (498153)-30.29.85; or may examine these documents at the FAA, Central Region, Office of the Assistant Chief Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri 64106.

This amendment (39-6902, AD 91-05-03) becomes effective on March 25, 1991.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A16EU](https://openairdocs.org/tcds/A16EU): General Atomics AeroTec Systems GmbH; names 6 of 8 models: Dornier 228-100, Dornier 228-200, Dornier 228-101, Dornier 228-202, Dornier 228-201, Dornier 228-212

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 11 (11 by airframe model, 0 by engine model)
- Makers: Dornier 11

Models with the most aircraft:

- [Dornier DORNIER 228-202](https://openairdocs.org/model/dornier-dornier-228-202): 11 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/91-05-03/models.md
Every aircraft: https://openairdocs.org/ad/91-05-03/aircraft.md

Its text cites no advisory circulars or STCs.

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