AD 80-12-15

AD Final Rules - DRS_80-12-15.html
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AD Number:
80-12-15
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
Airworthiness Directives; ROSEMOUNT, INC. All Model 856 AE-12, -13, and -15 Pitot-Static Probes up ...Show more
Subject:
Pitot-Static Probes
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
07/25/1980
Make:
Rosemount, Inc.
Model:
Pitot-Static Probes
Product Type:
Appliance
Product Subtype:
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 80-12-15
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-3848

AD NUMBER:   80-12-15

SUBJECT HEADING:   Airworthiness Directives; ROSEMOUNT, INC. All Model 856 AE-12, -13, and -15 Pitot-Static Probes up to and including S/N 49529

ACTION:  

SUMMARY:  

DATES:   Effective July 25, 1980.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
80-12-15 ROSEMOUNT, INC.: Amendment 39-3848. Applies to all Model 856 AE-12, -13, and -15 Pitot-Static Probes up to and including S/N 49529.

Compliance is required as indicated unless already accomplished. To prevent icing of the Pitot-Static Probe, accomplish the following:

Within the next 100 hours time in service, conduct resistance checks of the Pitot-Static Probe heater element in accordance with procedures in paragraph 10, Parts II and III of Boeing Alert Service Bulletin 737-30A1018 dated June 9, 1980 or FAA approved equivalent. All probes, including spares, serial numbers up to and including S/N 49529, must be checked. Probes with resistance values less than the minimum limits in the Boeing Alert Service Bulletin are considered defective. Dispatch of an airplane with defective probe heaters is limited to the minimum equipment list (MEL) restriction for operation with a failed Pitot-Static Probe heater (MEL Item 30-5). A defective probe falls into the category of an inoperative probe heater for MEL dispatch purposes. Upon request of the operator an equivalent means of compliance with the requirements of this AD may be approved by the Chief, Engineering and Manufacturing Branch, FAA, Great Lakes Region.

This amendment becomes effective July 25, 1980, as to all persons except those to whom it was made immediately effective by airmail letter dated June 11, 1980, which contained this amendment.

FOOTER: