# AD 93-23-01: Water Heaters and Coffee Makers - Type: Airworthiness directive - Status: Current - Products: Airbus A300 B2-1A, A300 B2-1C, A300 B2-203, A300 B2K-3C, A300 B4-103, A300 B4-203, A300 B4-2C, A300 B4-601, A300 B4-603, A300 B4-605R, A300 B4-620, A300 B4-622 and 117 more - Effective: December 7, 1993 - Superseded by: Nothing supersedes this AD - Product type: Appliance - Amendment: 39-8735 - Docket: 93-NM-181-AD - Registered aircraft: 3,210 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A5772B1362569D1186256A41004561B0.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/93-23-01 ## The airworthiness directive 93-23-01 NORDSKOG INDUSTRIES, INC.: Amendment 39-8735. Docket 93-NM-181-AD. Applicability: Nordskog water heaters and coffee makers, as listed in Nordskog Industries, Inc., Service Bulletin SB-93-34, dated October 21, 1993; as installed in, but not limited to Boeing Model 727, 737, 747, 757, and 767 series airplanes; McDonnell Douglas Model DC-9, DC-9-80, and DC-10 series airplanes, and MD-11 airplanes; Lockheed Model L-1011 series airplanes; Airbus Industrie Model A300, A310, and A320 series airplanes; Gulfstream Model G-1159 series airplanes and Model G-IV airplanes; de Havilland, Inc., Model DHC-8 series airplanes; Dassault-Aviation Model Mystere-Falcon 50 and 900 series airplanes; Canadair Model CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), and CL-600-2B16 (CL-601-3A and -3R) and CL-600-2B19 series airplanes; and Fokker Model F27 and F28 series airplanes; certificated in any category. Compliance: Required as indicated, unless accomplished previously. To preventexplosions of galley water heaters and coffee makers and subsequent injuries to passengers or cabin crew members, accomplish the following: (a) Within 30 days after the effective date of this AD, perform a one-time inspection to determine whether a NUPRO pressure relief valve having part number (P/N) SS-2C4-65 has been installed, in accordance with Nordskog Industries, Inc., Service Bulletin SB-93-34, dated October 21, 1993. If any NUPRO pressure relief valve having P/N SS-2C4-65 has been installed, prior to further flight, accomplish either paragraph (a)(1) or (a)(2) of this AD. (1) Remove the NUPRO pressure relief valve having P/N SS-2C4-65 and install a new, improved NUPRO pressure relief valve having P/N SS-CHF2-65, in accordance with the service bulletin. Or (2) Deactivate any Nordskog water heater or coffee maker listed in the service bulletin on which a NUPRO pressure relief valve having P/N SS-2C4-65 has been installed, and install a placard stating, "Not tobe used." (b) As of the effective date of this AD, no person shall install a NUPRO pressure relief valve having P/N SS-2C4-65 on any airplane. (c) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Los Angeles Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Los Angeles ACO. NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Los Angeles ACO. (d) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (e) The inspection and replacement shall be done in accordance with Nordskog Industries, Inc., Service Bulletin SB-93-34, dated October 21, 1993. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from Nordskog Industries, Inc., 16000 Strathern Street, Van Nuys, California 91406. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the FAA, Los Angeles ACO, 3229 E. Spring Street, Long Beach, California 90806-2425; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. (f) This amendment becomes effective on December 7, 1993. ## Affected data sheets (16) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS A6WE](https://openairdocs.org/tcds/A6WE): The Boeing Company; names 19 of 25 models: DC-9-12, DC-9-15F, DC-9-41, DC-9-13, DC-9-34F, DC-9-81 (MD-81), DC-9-33F, DC-9-83 (MD-83)… - [TCDS A35EU](https://openairdocs.org/tcds/A35EU): Airbus SAS; names 17 of 17 models: A310-203, A300 B4-622R, A300 F4-605R, A300 B4-601, A310-204, A310-221, A300 B4-603, A300 B4-622… - [TCDS A13NM](https://openairdocs.org/tcds/A13NM): De Havilland Aircraft of Canada Limited; names 12 of 16 models: DHC-8-101, DHC-8-102, DHC-8-103, DHC-8-106, DHC-8-201, DHC-8-202, DHC-8-301, DHC-8-311… - [TCDS A20WE](https://openairdocs.org/tcds/A20WE): The Boeing Company; names 12 of 14 models: 747-100B Series, 747SP Series, 747-400D Series, 747-400F Series, 747-200B Series, 747-200F Series, 747-300 Series, 747-200C Series… - [TCDS A-817](https://openairdocs.org/tcds/A-817): Fokker Services B.V.; names 8 of 8 models: F27 Mark 500, F27 Mark 100, F27 Mark 700, F27 Mark 200, F27 Mark 400, F27 Mark 600, F27 Mark 050, F27 Mark 300 - [TCDS A22WE](https://openairdocs.org/tcds/A22WE): The Boeing Company; names 8 of 11 models: DC-10-40, MD-11, DC-10-10F, DC-10-30, DC-10-30F (KC-10A KDC-10), DC-10-10, DC-10-40F, DC-10-15 - [TCDS A28NM](https://openairdocs.org/tcds/A28NM): Airbus SAS; names 7 of 50 models: A320-111, A320-211, A320-212, A320-214, A320-231, A320-232, A320-233 - [TCDS A16WE](https://openairdocs.org/tcds/A16WE): The Boeing Company; names 6 of 17 models: 737-500 Series, 737-100 Series, 737-200C Series, 737-300 Series, 737-200 Series, 737-400 Series - [TCDS A20EU](https://openairdocs.org/tcds/A20EU): Fokker Services B.V.; names 6 of 6 models: F28 Mark 1000, F28 Mark 4000, F28 Mark 2000, F28 Mark 0070, F28 Mark 3000, F28 Mark 0100 - [TCDS A3WE](https://openairdocs.org/tcds/A3WE): The Boeing Company; names 6 of 6 models: 727-100 Series, 727 Series, 727-200 Series, 727-100C Series, 727-200F Series, 727C Series - [TCDS A12EA](https://openairdocs.org/tcds/A12EA): Gulfstream Aerospace Corporation; names 4 of 7 models: G-1159A, G-IV, G-1159B, G-1159 - [TCDS A21EA](https://openairdocs.org/tcds/A21EA): Bombardier Inc.; names 3 of 5 models: CL-600-1A11 (600), CL-600-2A12 (601), CL-600-2B16 (604 Variant) - [TCDS A2NM](https://openairdocs.org/tcds/A2NM): The Boeing Company; names 3 of 4 models: 757-200CB Series, 757-200PF Series, 757-200 Series - [TCDS A1NM](https://openairdocs.org/tcds/A1NM): The Boeing Company; names 2 of 5 models: 767-300 Series, 767-200 Series - [TCDS A46EU](https://openairdocs.org/tcds/A46EU): Dassault Aviation; names 2 of 3 models: Mystere-Falcon 900, Mystere-Falcon 50 - [TCDS A21EA-1](https://openairdocs.org/tcds/A21EA-1): MHI RJ Aviation ULC; names 1 of 9 models: CL-600-2B19 (Regional Jet Series 100) ## 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: 3,210 (3,210 by airframe model, 0 by engine model) - Makers: Bombardier 884, Boeing 616, Airbus 425, Gulfstream Aerospace 411, Airbus Industrie 260, Canadair 183, Dassault 140, Mcdonnell Douglas 110, Dassault-Breguet 73, Gulfstream American 29 Models with the most aircraft: - [Bombardier CL-600-2B19](https://openairdocs.org/model/bombardier-cl-600-2b19): 395 aircraft (airframe model) - [Bombardier CL-600-2B16](https://openairdocs.org/model/bombardier-cl-600-2b16): 388 aircraft (airframe model) - [Gulfstream Aerospace G-IV](https://openairdocs.org/model/gulfstream-aerospace-g-iv): 357 aircraft (airframe model) - [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232): 188 aircraft (airframe model) - [Airbus A320-214](https://openairdocs.org/model/airbus-a320-214): 160 aircraft (airframe model) - [Canadair CL-600-2B16](https://openairdocs.org/model/canadair-cl-600-2b16): 134 aircraft (airframe model) - [Airbus Industrie A320-232](https://openairdocs.org/model/airbus-industrie-a320-232): 109 aircraft (airframe model) - [Dassault MYSTERE-FALCON 50](https://openairdocs.org/model/dassault-mystere-falcon-50): 88 aircraft (airframe model) - [Dassault-Breguet MYSTERE FALCON 900](https://openairdocs.org/model/dassault-breguet-mystere-falcon-900): 73 aircraft (airframe model) - [Boeing 757-232](https://openairdocs.org/model/boeing-757-232): 63 aircraft (airframe model) - [Dassault MYSTERE FALCON 900](https://openairdocs.org/model/dassault-mystere-falcon-900): 52 aircraft (airframe model) - [Mcdonnell Douglas DC-9-83(MD-83)](https://openairdocs.org/model/mcdonnell-douglas-dc-9-83-md-83): 49 aircraft (airframe model) - [Boeing 767-332](https://openairdocs.org/model/boeing-767-332): 46 aircraft (airframe model) - [Bombardier CL-600-2B16(CL-604)](https://openairdocs.org/model/bombardier-cl-600-2b16-cl-604): 42 aircraft (airframe model) - [Boeing 757-224](https://openairdocs.org/model/boeing-757-224): 40 aircraft (airframe model) - [Airbus Industrie A320-212](https://openairdocs.org/model/airbus-industrie-a320-212): 39 aircraft (airframe model) - [Boeing 757-222](https://openairdocs.org/model/boeing-757-222): 38 aircraft (airframe model) - [Boeing 767-322](https://openairdocs.org/model/boeing-767-322): 36 aircraft (airframe model) - [Airbus Industrie A300 F4-605R](https://openairdocs.org/model/airbus-industrie-a300-f4-605r): 36 aircraft (airframe model) - [Gulfstream Aerospace G-1159A](https://openairdocs.org/model/gulfstream-aerospace-g-1159a): 32 aircraft (airframe model) All 199 models: https://openairdocs.org/ad/93-23-01/models.md Every aircraft: https://openairdocs.org/ad/93-23-01/aircraft.md Its text cites no advisory circulars or STCs. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.