AD 69-16-01

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AD Number:
69-16-01
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
BOEING Model 727, 727C, and 727-200 Series Airplanes
Subject:
Emergency Procedures For Loss Of Generators
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
09/12/1969
Make:
The Boeing Company
Model:
727-200 Series | 727 Series | 727C Series
Product Type:
Aircraft
Product Subtype:
Large Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 69-16-01
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-838

AD NUMBER:   69-16-01

SUBJECT HEADING:   BOEING Model 727, 727C, and 727-200 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective September 12, 1969.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:   69-16-01 BOEING: Amdt. 39-838. Applies to Boeing Model 727, 727C, and 727-200 Series Airplanes.
Compliance required within 300 hours time in service after the effective date of this AD as indicated, unless already accomplished.
To provide the flight crew with more complete procedures to be followed if all generators are lost change the Airplane Flight Manual to read the following, or make an equivalent change approved by the Chief, Aircraft Engineering Division, FAA Western Region.
(a) Boeing 727 series (except 727-31, -31C, and 231), Airplane Flight Manual, Emergency Procedures Section, Loss of All Generators paragraph, must be revised to read:
LOSS OF ALL GENERATORS
Phase I
Essential power selector - STANDBY
Battery Switch - Check ON
PHASE II
Any generator field relay - CLOSE
Repeat if necessary until voltage and frequency of a generator are normal.
When voltage and frequency are normal switch essential power selector to operating generator.
NOTE: If a differential fault is indicated in any generator system, an automatic lockout feature prevents closing of the field relay. This lockout feature can be bypassed by momentarily moving the battery switch to OFF, then back ON, or by manually tripping and resetting the associated generator DC control circuit breaker.
Phase III
Restore system to normal if desired.
NOTE: Leave generator supplying essential power isolated until system integrity is verified.
Remove heavy electrical loads (galleys, air conditioning pack fans, etc.) or
Open bus tie breakers (if closed) before closing Generator Control Breakers.
For further information, see electrical systems operation, Normal Procedures - Section III.
(b) Boeing 727 series 727-31, -31C, and 231, Airplane Flight Manual, Emergency Procedures Section, Loss of All Generators paragraph, must be revised to read:
LOSS OF ALL GENERATORS
Phase I
Emergency Power Switch - ON
Battery Switch - Check ON
Phase II
Any generator field relay - CLOSE
Repeat if necessary until voltage and frequency of a generator are normal.
When voltage and frequency are normal switch essential power selector to operating generator.
NOTE: If a differential fault is indicated in any generator system, an automatic lockout feature prevents closing of the field relay. This lockout feature can be bypassed by momentarily moving the battery switch to OFF, then back ON, or by manually tripping and resetting the associated generator DC control circuit breaker.
Phase III
Restore system to normal if desired.
NOTE: Leave generator supplying essential power isolated until system integrity is verified.
Remove heavy electrical loads (galleys, air conditioning pack fans, etc.) or
Open bus tie breakers (if closed) before closing Generator Control Breakers.
For further information, see electrical system operation, Normal Procedures - Section III.
The effective date of amendment 39-810 is revised to "August 15, 1969."
Effective August 15, 1969.
Revised September 12, 1969.

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