# Special Conditions: Boeing Model 727-200 and 727-200F Series Airplanes; as Modified by Rockwell Collins; High-Intensity Radiated Fields (HIRF)
> **Rule** · Final special conditions; request for comments. · Published 2000-03-14 · Effective 2000-03-06 · 65 FR 13666
## Document
- **Document number:** 00-6125
- **Category:** other
- **Type:** Rule
- **Action:** Final special conditions; request for comments.
- **Citation:** 65 FR 13666
- **Publication date:** 2000-03-14
- **Effective date:** 2000-03-06
## Abstract

These special conditions are issued for Boeing Model 727-200 and 727-200F series airplanes modified by Rockwell Collins. These modified airplanes will have a novel or unusual design feature associated with the Rockwell Collins Multi-Mode Receiver (MMR) System. The applicable airworthiness regulations do not contain adequate or appropriate safety standards for this design feature. These special conditions contain the additional safety standards that the Administrator considers necessary to establish a level of safety equivalent to that established by the existing airworthiness standards.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2000/03/14/00-6125/special-conditions-boeing-model-727-200-and-727-200f-series-airplanes-as-modified-by-rockwell)
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