Source: https://www.federalregister.gov/articles/2011/09/16/2011-23720/special-conditions-boeing-model-737-600--700--700c--800--900-and--900er-series-airplanes
Timestamp: 2015-07-29 04:55:26
Document Index: 776290359

Matched Legal Cases: ['art 34', 'art 36', '§ 21', 'art 4', 'art 25', '§ 25', '§ 25', '§ 25', '§ 25', '§ 25', '§ 25', '§ 25', '§ 25', '§ 25', '§ 25']

Federal Register | Special Conditions: Boeing Model 737-600, -700, -700C, -800, -900, and -900ER Series Airplanes; Rechargeable Lithium-Ion Battery Installations
Dates: The effective date of these special conditions is September 9, 2011. We must receive your comments by October 31, 2011.
-57627 (3 pages)
Document Number: 2011-23720
Shorter URL: https://federalregister.gov/a/2011-23720 Related Topics
In addition to the applicable airworthiness regulations and special conditions, the Boeing Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes must comply with the fuel-vent and exhaust-emission requirements of 14 CFR part 34, and the noise-certification requirements of 14 CFR part 36.
Special conditions are initially applicable to the model for which they are issued. Should Electronic Cable Specialists, Inc., apply for a supplemental type certificate to modify any other model included on type certificate A16WE to incorporate the same or similar novel or unusual design feature, the special conditions would also apply to the other model under § 21.101.
The current regulations governing installation of batteries in large, transport-category airplanes were derived from Civil Air Regulations (CAR) part 4b.625(d) as part of the re-codification of CAR 4b that established 14 CFR part 25 in February 1965. The new battery requirements, § 25.1353(c)(1) through (c)(4), basically reworded the CAR requirements.
Increased use of Ni-Cd batteries in small airplanes resulted in increased frequency of battery fires and failures, which led to additional rulemaking affecting large, transport-category airplanes as well as small airplanes. On September 1, 1977, and March 1, 1978, the FAA issued § 25.1353(c)(5) and (c)(6), respectively, which govern Ni-Cd battery installations on large, transport-category airplanes.
The problems that lithium-battery users experience raise concerns about the use of these batteries in commercial aviation. The intent of these special conditions is to establish appropriate airworthiness standards for lithium-battery installations in the Boeing Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes and to ensure, as required by §§ 25.601 and 25.1309, that these battery installations will not result in an unsafe condition.
The flammable-fluid fire-protection requirements of § 25.863. In the past, this rule was not applied to batteries in transport-category airplanes because the electrolytes in lead-acid and Ni-Cd batteries are not considered flammable.
As discussed above, these special conditions are applicable to the Boeing Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. Should Electronic Cable Specialists, Inc., apply at a later date for a supplemental type certificate to modify any other model included on type certificate A16WE to incorporate the same novel or unusual design feature, the special conditions would apply to that model as well. Conclusion Back to Top
In lieu of the requirements of § 25.1353(c)(1) through (c)(4) at Amendment 25-42, Lithium-ion batteries and battery installations on Boeing Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes must be designed and installed as follows:
(4) Installations of lithium batteries must meet the requirements of § 25.863(a) through (d).
(5) No corrosive fluids or gases that may escape from any lithium battery may damage surrounding structure or any adjacent systems, equipment, or electrical wiring of the airplane in such a way as to cause a major or more-severe failure condition, as determined in accordance with § 25.1309(b).
(9) The instructions for continued airworthiness required by § 25.1529 (and 14 CFR 26.11) must contain maintenance steps to assure that the lithium batteries are sufficiently charged at appropriate intervals specified by the battery manufacturer. The instructions for continued airworthiness must also contain procedures to ensure the integrity of lithium batteries in spares storage to prevent the replacement of batteries, the function of which are required for safe operation of the airplane, with batteries that have experienced degraded charge-retention ability or other damage due to prolonged storage at a low state-of-charge. Precautions should be included in the continued-airworthiness maintenance instructions to prevent mishandling of lithium batteries, which could result in a short circuit or other unintentional damage that could result in personal injury or property damage.
These special conditions are not intended to replace § 25.1353(b) at Amendments 25-77 (-600, -700, -800), 25-91 (-700C, -900), and 25-108 (-900ER) in the certification basis of the Boeing Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. These special conditions apply only to rechargeable lithium batteries and their use in the dual Class 3 EFB systems and their installation. The requirements of § 25.1353(b) at Amendment 25-77 (-600, -700, -800), 25-91 (-700C, -900), and 25-108 (-900ER) remain in effect for EFB batteries and battery installations on Boeing Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes that do not use rechargeable lithium-ion batteries.